Fixes a design regression on Preview where the fold icon became small
due to the icon standardization PR.

Release Notes:

- [Preview] Fixed an issue with the size of the fold line icon.

Last follow-up of https://github.com/zed-industries/zed/pull/3002
Fixes
https://zed-industries.slack.com/archives/C04S6T1T7TQ/p1695281196667609

Copilot sends multiple events about its LSP server readiness, not
necessarily recreating the server from scratch (e.g. due to re-sign in
action). Avoid re-adding same log subscriptions on the same LSP server,
which causes panics.

Release Notes:

- N/A

Update project search semantic ui to accommodate for users who have not
set the OPENAI_API_KEY in their environment variables.

Release Notes:

- Expand Semantic Index status to include status for non authenticated
users
- Update Search UI to illustrate this status.

Release Notes:

- Fixes a bug where channels could no longer be rearranged with drag and
drop.

Follow-up of https://github.com/zed-industries/zed/pull/2991 improving
rough edges around supplementary LSP servers:

* Fixes
https://zed-industries.slack.com/archives/C04S6T1T7TQ/p1695281196667609
Copilot init panic
* Makes LSP server list scrollable in the panel
* Shows supplementary servers' RPC logs in the panel

Release Notes:

- N/A

Release Notes:

- Restore `cmd-shift-d` as 'editor::DuplicateLine' and move
`editor::SelectAllMatches` to `cmd-shift-L`, like in VS Code. The
previous action for `cmd-shift-l`, `editor::SplitSelectionIntoLines`,
has been moved to the sublime base keymap.
- Fixes a panic when using 'editor::SelectAllMatches'  on an empty line.

This PR fixes several bugs related to channel moving and it's
unintuitive behavior when attempting to re-order channels

Release Notes:

- N/A

Release Notes:

- Fixed a bug where the 'Open Notes' action in the collaboration panel
context menu didn't work (preview only).

Enable keyboard shortcuts for Project Search modes, and ensure project
search settings are persisted search to search.

Release Notes:

- Added alt-cmd-s to Toggle Semantic Search Mode
- Added alt-cmd-g to Toggle Regex Search Mode
- Added alt-cmd-x to Toggle Text Search Mode
- Defaulted new project searches to using last used search mode and
settings.

Equivalent to hitting cmd-d as many times as possible

cc: @JosephTLyons this PR needs a bit of work on user-facing naming and
interactions:
- [x] ~~I thought cmd-shift-d would be nice for this action, but that is
already taken by a sublime key binding. Could we use the VSCode binding?
I left the sublime text binding in but commented out.~~ Gonna just leave
it as is
- [x] ~~I went through 'SelectAllMatches' and 'SelectAll' as names for
this action, but ran into conflicts with the buffer search action and
the existing SelectAll (`cmd-a`) action. I decided to go with
`SelectNextAll`, but could use your help here.~~ Decided to go with
'SelectAllMatches'

Release Notes:
- Added a `editor::SelectAllMatches` command, bound to `cmd-shift-d`,
for selecting all matching occurrences under your selection. Note that
this has replaced the previous binding for `editor::DuplicateLine`.

Copilot is being used in every buffer, but we do not see its logs that
easily.
In the future, prettier wrapper will pretend to be an LSP server, it is
better to log its messages somewhere, so prepare an infrastructure for
that.

<img width="1727" alt="image"
src="https://github.com/zed-industries/zed/assets/2690773/d31a257c-9608-46fa-8be1-f0a2a2bdbdb7">

Copilot seem to have no rpc messages logged for some reason now,
prettier wrapper might be a better case to investigate this, so leaving
as is.

Release Notes:

- N/A

For vim command I'd like to be able to test that e.g. workspace::Save
works.

This should have no user-visible impact, but tidies up one of the
awkwardnesses
of how vim uses global state at the moment.

Co-Authored-By: Max Brunsfeld <maxbrunsfeld@gmail.com>

For vim command I'd like to be able to test that e.g. workspace::Save
works.

TODO:

- [x] Add drag and drop
- [x] Polish up in-flight decisions.
- [x] Fix chat panel panic
- [x] Add nice hover effect highlighting the matching ones
- [x] Fix and test keyboard

Release Notes:

- N/A

Fix chat desync from moving / linking channels

v0 of the Semantic Index evaluate test suite

Release Notes:

- Added eval.rs as an example to the semantic-index crates
- Generates test metrics for two small projects, as a starting point to
systematically evaluate retrieval quality

Release Notes:
- Fixed "Replace next" not advancing the match index.

WIP: Change rendering of drag and drop based on alt-modifier