This PR enables cursors for remote participants.

They are shown for 2 seconds when you focus a buffer, and then on hover.

Release Notes:

- Added usernames next to remote cursors

This PR fixes some more references in the docs in the `ui` crate.

Release Notes:

- N/A

This PR renames the `overflow_hidden_x` and `overflow_hidden_y` methods
to `overflow_x_hidden` and `overflow_y_hidden`, respectively.

This provides consistency with our `overflow_x_scroll` /
`overflow_y_scroll` methods, as well as better matches Tailwind's
naming.

Release Notes:

- N/A

This PR makes it so long diagnostic messages no longer overflow the
status bar and push the right tools off-screen.

Here is an example with a long (placeholder) diagnostic message:

<img width="1136" alt="Screenshot 2024-01-18 at 9 47 07 PM"
src="https://github.com/zed-industries/zed/assets/1486634/18568527-c608-4d4a-9118-b84c6d81c13e">

Release Notes:

- Fixed long diagnostic messages overflowing the status bar.

This reverts commit 345b983c8edd18acc346845dcdd1266e144a05a9.

This seems to have caused only the first line of panics to be reported
in production builds.

Release Notes:

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

This reverts commit 345b983c8edd18acc346845dcdd1266e144a05a9.

This PR turns `FacePile` back into a component.

Our usage of it seemed a little weird, with us calling `render`
manually.

We're now implementing `Styled` on `FacePile` through its inner `Div` so
that we can apply the `p_1` at the call site.

Release Notes:

- N/A

Also, factors out the fluent building APIs from IntoElement into their
own traits.

Also makes the project panel context menu initialization fluent:

<img width="1328" alt="Screenshot 2024-01-18 at 3 33 45 PM"
src="https://github.com/zed-industries/zed/assets/2280405/3468b6f2-07f0-48cf-bec1-ac0379333209">

Release Notes:

- Fixed pop in when right clicking on the project panel.

This PR tweaks the description of the `gpui` crate, since it's now the
only version.

There can only be one!

Release Notes:

- N/A

This PR makes clicking the label inside of a `ListHeader` with a
disclosure also toggle the disclosure.

Release Notes:

- Added support for clicking the "Online", "Offline", and "Requests"
headers in the contact list to toggle their expansion.

This PR removes the VS Code themes from the `assets/` directory, as
we're not currently using them (and it's unlikely we will in their
current state).

Release Notes:

- N/A

I'm not yet sure whether this is 100% correct, but it seems to alleviate
the following issue:
`When opening a dock, the panel doesn't appear right away. An empty dock
is briefly visible.`
Release Notes:

- Fixed panel layout being incorrect for a brief time after opening
(fixes https://github.com/zed-industries/community/issues/2415)

This PR adds a Git [`.mailmap`](https://git-scm.com/docs/gitmailmap)
file to canonicalize committer names/emails.

Release Notes:

- N/A

This uploads apples crash reports to our servers when telemetry is
enabled.

Rather than jumping via the website, it uploads to collab directly. (I'd
like
to update the panic handler to do this too to make it possible to work
on that end-to-end without zed.dev running).

Release Notes:

- Added reporting of crashes when telemetry is enabled

This PR styles the reset key state for the assistant panel.

Community issue: https://github.com/zed-industries/community/issues/2429

<img width="641" alt="Screenshot 2024-01-18 at 4 28 32 PM"
src="https://github.com/zed-industries/zed/assets/1486634/57377804-2867-45d3-906c-353130ec78e6">

Release Notes:

- Fixed the reset key screen for the assistant panel.

Release Notes:

- Fixed a case where `.` in vim might not repeat the last action

This reverts commit 28a23372185c7a30c7790085a6a010c3cad6ad09, reversing
changes made to e992f84735a2ca166a7388d4eca69a6b4e6ee212.

[[PR Description]]

Release Notes:

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

This reverts commit 28a23372185c7a30c7790085a6a010c3cad6ad09, reversing
changes made to e992f84735a2ca166a7388d4eca69a6b4e6ee212.

Also, some fun test helpers

Co-Authored-By: Mikayla <mikayla@zed.dev>

You can now use .debug_selector() to make it possible for tests to find
a given element,
and .debug_bounds() to find the coordinates of where it was painted.


Release Notes:

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

Also, some fun test helpers

Co-Authored-By: Mikayla <mikayla@zed.dev>

Previously, we were trying not to synchronize the terminal too often
because there could be multiple layout/paint calls prior to rendering a
frame.

Now that we perform a single render pass per frame, we can just
synchronize the terminal state. Not doing so could make it seem like
we're dropping frames.

Release Notes:

- Improved terminal rendering performance.

Release Notes:

- N/A

* Use the impersonator id to prevent these tokens from counting against
the impersonated user when limiting the users' total of access tokens.
* When connecting using an access token with an impersonator add the
impersonator as a field to the tracing span that wraps the task for that
connection.
* Disallow impersonating users via the admin API token in production,
because when using the admin API token, we aren't able to identify the
impersonator.

Fixes a bug where, when focusing a pane directly, it failed to transfer
focus to the active item.

Co-Authored-By: Nathan Sobo <nathan@zed.dev>

Co-Authored-By: Mikayla <mikayla@zed.dev>

[[PR Description]]

Release Notes:

- Fixed a bug where following could scroll incorrectly

Co-Authored-By: Mikayla <mikayla@zed.dev>

This PR updates the speaker borders to use the regular `info` status
color instead of the `info_border` color.

This should provide more contrast and make it clearer as to who is
speaking.

Release Notes:

- Made the active speakers' borders more visible when in a call.

This fixes the missing icons in nightly. Regression was introduced in
https://github.com/zed-industries/zed/pull/4122.

Release Notes:

- N/A

Co-authored-by: Mikayla <mikayla@zed.dev>