Closes https://github.com/zed-industries/zed/issues/11626
Part of https://github.com/zed-industries/zed/issues/12853
`"restore_on_file_reopen": true` in workspace settings can now be used
to enable and disable editor data between file reopens in the same pane:
https://github.com/user-attachments/assets/8d938ee1-d854-42a8-bbc3-2a4e4d7d5933
The settings are generic and panes' data store can be extended for
further entities, beyond editors.
---------------
Impl details:
Currently, the project entry IDs seem to be stable across file reopens,
unlike BufferIds, so those were used.
Originally, the DB data was considered over in-memory one as editors
serialize their state anyway, but managing and exposing PaneIds out of
the DB is quite tedious and joining the DB data otherwise is not
possible.
Release Notes:
- Started to restore editor state on reopen
Closes: #17543
Release Notes:
- **New Feature:** Introduced the ability to automatically remove files
and directories from the Zed project panel that are specified in
`.gitignore`.
- **Configuration Option:** This behavior can be controlled via the new
`project_panel.hide_gitignore` setting. By setting it to `true`, files
listed in `.gitignore` will be excluded from the project panel.
- **Toggle:** Ability to toggle this setting using the action
`ProjectPanel::ToggleHideGitIgnore`
```json
"project_panel": {
"hide_gitignore": true
},
```
This results in a cleaner and easier to browse project panel for
projects that generate a lot of object files like `xv6-riscv` or `linux`
without needing to tweak `file_scan_exclusions` on `settings.json`
**Preview:**
- With `"project_panel.hide_gitignore": false` (default, this is how zed
currently looks)

- With `"project_panel.hide_gitignore": true`

- Action `ProjectPanel::ToggleHideGitIgnore`

This is a pure refactoring PR that goes through all the git-related APIs
exposed by the worktree crate and minimizes their use outside that
crate, migrating callers of those APIs to read from the GitStore
instead. This is to prepare for evacuating git repository state from
worktrees and making the GitStore the new source of truth.
Other drive-by changes:
- `project::git` is now `project::git_store`, for consistency with the
other project stores
- the project panel's test module has been split into its own file
Release Notes:
- N/A
---------
Co-authored-by: Max Brunsfeld <maxbrunsfeld@gmail.com>