Adds open events for

- Welcome page
- Project search
- Project diagnostics

Release Notes:

- N/A

Release Notes:

- Fixed a panic that could occur when closing a tab while dragging it.

As this is used if you mis-spell "buffer_font_family", it should be
monospace.

Also treat "Zed Mono" and "Zed Sans" as valid fonts

project search
diagnostics
welcome page

A sequence of events: Launch Zed -> Quit Zed -> Launch Zed would leave
you with a project panel in a a different state on each open (e.g. if it
is open on 1st one, 2nd run will have it closed). We were essentially
not tracking whether the deserialization took place.

Release Notes:

- Fixed project panel being toggled on/off on startup due to incorrect
tracking of serialization state (solves
https://github.com/zed-industries/community/issues/2406)

Also prevent tabs from being added in readonly editors

Release Notes:

- Fixed LSP logs being inserted into the editor incorrectly
- Fixed `editor::Tab` action inserting tabs in read-only files

Also prevent tabs from being added in readonly editors

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

By the time the event handler is invoked, all information about the
rendered layout tree is gone.

Release Notes:

- N/A

Release Notes:

- N/A

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

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

This fixes the close button not being vertically aligned in the tab bar.


## Before
![screenshot-2024-01-15-18 13
49@2x](https://github.com/zed-industries/zed/assets/1185253/edf81b4d-a93a-461a-9835-4aba025cf337)

## After
![screenshot-2024-01-15-18 14
45@2x](https://github.com/zed-industries/zed/assets/1185253/2ae24c8c-9df3-4248-8566-fee6ce8602e0)


---

Release Notes:

- Fixed close-tab button not being vertically aligned in the tab bar.

Co-authored-by: Marshall <marshall@zed.dev>

This PR renames the `h_stack` and `v_stack` to `h_flex` and `v_flex`,
respectively.

We were previously using `h_stack` and `v_stack` to match SwiftUI, but
`h_flex` and `v_flex` fit better with the web/flexbox terminology that
the rest of GPUI uses.

Additionally, we were already calling the utility functions used to
implement `h_stack` and `v_stack` by the new names.

Release Notes:

- N/A

This PR makes the close button for tabs square.

`IconButton` now accepts a `shape`, and using `IconButtonShape::Square`
will ensure the `IconButton` is square with respect to its contained
icon.

#### Before

<img width="119" alt="Screenshot 2024-01-15 at 10 32 40 AM"
src="https://github.com/zed-industries/zed/assets/1486634/dc806b9b-411f-4cd9-8c10-676d2cbd298b">

#### After

<img width="116" alt="Screenshot 2024-01-15 at 10 32 24 AM"
src="https://github.com/zed-industries/zed/assets/1486634/8b4ef43c-14b6-449f-a235-5d7affd82c4e">

Release Notes:

- Changed the tab close button to be square.

This was causing the Metal shaders to incorrectly interpret the
primitives submitted by GPUI, which in turn caused rendering to be
completely borked.

Release Notes:

- N/A

Honestly thought this was a bug with our terminal port lol. Turns out
its an oversight in the `dialoguer` crate but its seems pretty easy to
work around so might as well

Release Notes:

- N/A

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

Details are in https://github.com/zed-industries/font-kit/pull/1; We're
not doing anything too fancy, really. Still, you should mostly see font
loading times drop significantly for font collections
Release Notes:
- Improved loading performance of large font collections (e.g. Iosevka).
Fixes https://github.com/zed-industries/community/issues/1745,
https://github.com/zed-industries/community/issues/246


https://github.com/zed-industries/zed/assets/24362066/f70edbad-ded6-4c12-9c6d-7a487f330a1b

Release Notes:

- N/A

LSP log editor caused recursive flood of messages, and feedback editor
is better with people writing their own feedback.

Release Notes:

- Fixed hanging due to excessive logs when browsing Copilot LSP logs

LSP log editor caused recursive flood of messages, and feedback editor is better with people writing their own feedback.

This fixes the click event on the "copy error message" button by
changing the `editor` element to ignore mouse-down events when the
default was prevented. That's similar to how `div` does it.

Release Notes:

- Fixed a bug that prevented "copy error message" button from being
clicked.

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

<img width="996" alt="image"
src="https://github.com/zed-industries/zed/assets/482957/a5683382-6ff1-4558-9e9b-ebc17bc00289">

TODO: 
- [x] Fix rename editor not updating

Release Notes:

- Improved rendering performance when editing.

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

# Conflicts:
#	crates/gpui/src/elements/div.rs

It'd be nice to automatically get warned if you're about to do a
backward incompatible migration mistakenly, and sqauwk does exactly
that.

Release Notes:

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

- Update chat panel with current channel
- Open chat panel for guests
- Open chat when joining a channel with guests
- Some tweaks for chat panels
- Don't lose focus on default panel state
- Make chat prettier (to my eyes at least)
- Fix multiple mentions in one message
- Show a border when scrolled in chat
- Fix re-docking chat panel
- Move settings subscription to dock

[[PR Description]]

Release Notes:

- Opens chat by default when joining a public channel
- Improves chat panel UI

Release Notes:

- Improve legibility of default UI font

Reduces likelihood of panels being unable to move themselves

Release Notes:

- Fix 'open telemetry log' command to actually show the telemetry log.