This PR adds support for the deno LSP. Should be reviewable now.

Release Notes:

- Added support for the Deno LSP
([#5361](https://github.com/zed-industries/zed/issues/5361)).

This PR adds support for [Gleam](https://gleam.run/).

<img width="1320" alt="Screenshot 2024-01-25 at 6 39 18 PM"
src="https://github.com/zed-industries/zed/assets/1486634/7891b6e9-d7dc-46a0-b7c5-8aa7854c1f35">

<img width="757" alt="Screenshot 2024-01-25 at 6 39 37 PM"
src="https://github.com/zed-industries/zed/assets/1486634/f7ce6b3f-6175-45cb-8547-cfd286d918c6">

<img width="694" alt="Screenshot 2024-01-25 at 6 39 55 PM"
src="https://github.com/zed-industries/zed/assets/1486634/b0838027-c377-47e6-bdd1-bdc9b67a8672">

There are still some areas of improvement, like extending what
constructs we support in the outline view, but this is a good start.

Release Notes:

- Added Gleam support
([#5162](https://github.com/zed-industries/zed/issues/5162)).

Currently whenever a channel changes we send a huge amount of data to
each member. This is the first step in reducing that

Co-Authored-By: Max <max@zed.dev>
Co-Authored-By: bennetbo <bennetbo@gmx.de>

This PR cleans up a handful of references in doc comments in the
`language` crate so that `rustdoc` will link and display them correctly.

Release Notes:

- N/A

This restores the ability for project guests to see documentation on
autocomplete suggestions.

@ForLoveOfCats This code might have gotten lost during the GPUI upgrade.
I'm not sure what happened. I tested this locally, and it seems to fix
completion docs for guests. Could you 👀 and see if there are any tests
or any other code that got lost along with this during the upgrade?

🔥 that this is open source now.

Release Notes:

- Changed instances of "Github" in user-facing UI to CamelCase "GitHub".

This PR removes the placeholder description from the PR template, opting
to just leave empty space instead.

I've seen lots of instances where authors will not delete the
placeholder, and it ends up in Git history, which is not desirable.

Release Notes:

- N/A

[[PR Description]]

Release Notes:

- (Added|Fixed|Improved) ...
([#<public_issue_number_if_exists>](https://github.com/zed-industries/zed/issues/<public_issue_number_if_exists>)).

enabled syntax highlighting for **.htm** and **.shtml** files

Release Notes:
- Added support for syntax highlighting in HTML files with `.htm` and
`.shtml` extensions
([#4510](https://github.com/zed-industries/zed/issues/4510)).

> codespell --skip="*.json,*.rtf" \

--ignore-words-list=crate,delet,inout,iterm,jumo,lightening,othe,ser,tabe,te,tese,thi,updat
* https://github.com/codespell-project/codespell/blob/master/README.rst

Release Notes:

- N/A

This PR makes the avatars of followers in a facepile smaller than the
leader's avatar.

<img width="227" alt="Screenshot 2024-01-25 at 1 42 14 PM"
src="https://github.com/zed-industries/zed/assets/1486634/defc22b4-4ae1-4d63-a0d8-53e3ca8cce04">

Release Notes:

- Adjusted the size of follower avatars to be smaller than the leader.

Co-authored-by: Conrad <conrad@zed.dev>

Co-authored-by: Christian Clauss <cclauss@me.com>

This opens up a possibility of supporting multiple comment continuation
flavours in editor, e.g. doc comments for Rust (which we seize as well
in this commit). Only the first `line_comment` value is used for
Editor::ToggleComments

Fixes: https://github.com/zed-industries/zed/issues/6692

Release Notes:
- Added support for doc-comment continuations in Rust language.

- Fail faster on serialization failure
- Move expensive participant update out of transaction

Release Notes:

- Fixed creating/moving channels in busy workspaces

Co-Authored-By: Marshall <marshall@zed.dev>

Co-Authored-By: Thorsten <thorsten@zed.dev>

This PR sorts the entries in the `.mailmap` file to keep them in
alphabetical order.

Release Notes:

- N/A

* applicable history items were sorted by latest opened order, now
sorted by match score as the search matches
* adjust the match sorting to show paths in the alphanumerical order (in
case of a tie on other params)

Release Notes:

- Improved file finder entries ordering

---------

Co-authored-by: Piotr <piotr@zed.dev>

This fixes #6440.

The previous approach was calling select-next-match in a loop, which
leaves optimizations on the table when you already know that you want to
select all of the matches.

So what we did here is to optimize the code for the "give me all
matches" case:

1. Find all results in the current buffer
2. Build up *all* selections
3. Sort selections & throw away overlapping ones (keep oldest)
4. Unfold if necessary
5. Render selections

On my M3 Max searching for `<span` in the test file [1] from the ticket,
it

previously took: ~1.07s
now takes: ~4ms

[1]:
https://github.com/standardebooks/edgar-allan-poe_poetry/blob/master/src/epub/text/poetry.xhtml

![screenshot-2024-01-25-12 49
32@2x](https://github.com/zed-industries/zed/assets/1185253/9f8ef0fa-a3a7-461c-9ed6-263e48835806)

### Release Notes:

- Improved performance of select-all-matches by factor of ~250
([#6440](https://github.com/zed-industries/zed/issues/6440)).

Make the code more readable

This fixes #6440.

The previous approach was calling select-next-match in a loop, which
leaves optimizations on the table when you already know that you want to
select all of the matches.

So what we did here is to optimize the code for the "give me all
matches" case:

1. Find all results in the current buffer
2. Build up *all* selections
3. Sort selections & throw away overlapping ones (keep oldest)
4. Unfold if necessary
5. Render selections

On my M3 Max searching for `<span` in the test file [1] from the ticket,
it

previously took: ~1.07s
now takes: ~4ms

[1]: https://github.com/standardebooks/edgar-allan-poe_poetry/blob/master/src/epub/text/poetry.xhtml

Co-authored-by: Antonio <antonio@zed.dev>

Fixes #6441 
Release Notes:
- Fixed "SelectNextMatch", "SelectPrevMatch" and "SelectAllMatches"
actions not working when search bar is not visible.
- Fixed "SelectPrevMatch" not being bound in project search.

---------

Co-authored-by: Kirill <kirill@zed.dev>

This is a follow-up to #6459. It logs the error instead of silently
skipping it.

Release Notes:

- N/A

We saw a panic that was caused by the previous `Option.unwrap()`, so
this changes the method to return a `Result` and logs the error if
possible.

Co-authored-by: Antonio <antonio@zed.dev>

Follow-up to #4138.

Release Notes:

- N/A

fixes a bug when compiling on windows


![image](https://github.com/zed-industries/zed/assets/715417/5a35b1b2-29f4-4987-9410-730c9b287f82)

Release Notes:

- Fixed: compilation error related to `LineEnding` on Windows

https://github.com/servo/core-foundation-rs/pull/457 was released in
cocoa 0.25, so this patch dependency on github can be removed.

Release Notes:

- N/A

Although we now usually get the .ips file alongside a panic, when we
don't it's much harder to track down where panics happen because we're
not showing inlined frames.

Try iterating over all symbols in a frame to see if that improves panic
reporting.

One of the complaints of users on our first Hack call was that the error
messages you got when channel joining failed were not great.

This aims to fix that specific case, and lay the groundwork for future
improvements.

It adds two new methods to anyhow::Error

* `.error_code()` which returns a value from zed.proto (or
ErrorCode::Internal if the error has no specific tag)
* `.error_tag("key")` which returns the value of the tag (or None).

To construct errors with these fields set, you can use a builder API
based on the ErrorCode type:

* `Err(ErrorCode::Forbidden.anyhow())`
* `Err(ErrorCode::Forbidden.message("cannot join channel").into())` - to
add any context you want in the logs
* `Err(ErrorCode::WrongReleaseChannel.tag("required", "stable").into())`
- to add structured metadata to help the client handle the error better.


Release Notes:

- Improved error messaging when channel joining fails.

Make channel panel errors louder

Added hello world example to the gpui crate copied from https://gpui.rs

Release Notes:

- N/A

Release Notes:

- Fixed a panic that could occur finding a git repository.

Release Notes:

- N/A

This PR cleans up some of the Zed meta docs.

Namely:
- Removed references to the `zed-industries/community` repository
- Removed old docs directory (it'll be in Git history if we need it)

Release Notes:

- N/A

Release Notes:

- N/A

TEMP

TEMP

First pass of structured errors

Improved error handling for channel joining failures

Sometimes Cocoa calls app delegate methods (notably the display link)
while we're calling Cocoa methods. This causes a deadlock unless we
are careful to run cocao methods while we're not holding our internal
locks

Release Notes:

- Fixed a crash when opening the MacOS Save As dialogue.

Release Notes:

- Fixed a panic in calculating remote cursor positions

Sometimes Cocoa calls app delegate methods (notably the display link)
while we're calling Cocoa methods. This causes a deadlock unless we
are careful to run cocao methods while we're not holding our internal
locks