project: Fine-grained language server management (#24038)

Closes #ISSUE
https://github.com/zed-industries/zed/pull/23804
Release Notes:

- Improved detection of project roots for use by language servers.

Closes #ISSUE

Release Notes:

- N/A *or* Added/Fixed/Improved ...

---------

Co-authored-by: smit <0xtimsb@gmail.com>
Co-authored-by: Henrikh Kantuni <henrikh.kantuni@gmail.com>
Co-authored-by: Caleb! <48127194+kaf-lamed-beyt@users.noreply.github.com>
Co-authored-by: Marshall Bowers <git@maxdeviant.com>
Co-authored-by: Kirill Bulatov <kirill@zed.dev>
Co-authored-by: Agus Zubiaga <agus@zed.dev>
Co-authored-by: Danilo <danilo@zed.dev>
Co-authored-by: Nate Butler <iamnbutler@gmail.com>

crates/tasks_ui/src/modal.rs

@@ -1020,7 +1020,7 @@ mod tests {
 
         let _rs_file = workspace
             .update_in(cx, |workspace, window, cx| {
-                workspace.open_abs_path(PathBuf::from("/dir/b.rs"), true, window, cx)
+                workspace.open_abs_path(PathBuf::from(path!("/dir/b.rs")), true, window, cx)
             })
             .await
             .unwrap();