Debugger implementation (#13433)

###  DISCLAIMER

> As of 6th March 2025, debugger is still in development. We plan to
merge it behind a staff-only feature flag for staff use only, followed
by non-public release and then finally a public one (akin to how Git
panel release was handled). This is done to ensure the best experience
when it gets released.

### END OF DISCLAIMER 

**The current state of the debugger implementation:**


https://github.com/user-attachments/assets/c4deff07-80dd-4dc6-ad2e-0c252a478fe9


https://github.com/user-attachments/assets/e1ed2345-b750-4bb6-9c97-50961b76904f

----

All the todo's are in the following channel, so it's easier to work on
this together:
https://zed.dev/channel/zed-debugger-11370

If you are on Linux, you can use the following command to join the
channel:
```cli
zed https://zed.dev/channel/zed-debugger-11370 
```

## Current Features

- Collab
  - Breakpoints
    - Sync when you (re)join a project
    - Sync when you add/remove a breakpoint
  - Sync active debug line
  - Stack frames
    - Click on stack frame
      - View variables that belong to the stack frame
      - Visit the source file
    - Restart stack frame (if adapter supports this)
  - Variables
  - Loaded sources
  - Modules
  - Controls
    - Continue
    - Step back
      - Stepping granularity (configurable)
    - Step into
      - Stepping granularity (configurable)
    - Step over
      - Stepping granularity (configurable)
    - Step out
      - Stepping granularity (configurable)
  - Debug console
- Breakpoints
  - Log breakpoints
  - line breakpoints
  - Persistent between zed sessions (configurable)
  - Multi buffer support
  - Toggle disable/enable all breakpoints
- Stack frames
  - Click on stack frame
    - View variables that belong to the stack frame
    - Visit the source file
    - Show collapsed stack frames
  - Restart stack frame (if adapter supports this)
- Loaded sources
  - View all used loaded sources if supported by adapter.
- Modules
  - View all used modules (if adapter supports this)
- Variables
  - Copy value
  - Copy name
  - Copy memory reference
  - Set value (if adapter supports this)
  - keyboard navigation
- Debug Console
  - See logs
  - View output that was sent from debug adapter
    - Output grouping
  - Evaluate code
    - Updates the variable list
    - Auto completion
- If not supported by adapter, we will show auto-completion for existing
variables
- Debug Terminal
- Run custom commands and change env values right inside your Zed
terminal
- Attach to process (if adapter supports this)
  - Process picker
- Controls
  - Continue
  - Step back
    - Stepping granularity (configurable)
  - Step into
    - Stepping granularity (configurable)
  - Step over
    - Stepping granularity (configurable)
  - Step out
    - Stepping granularity (configurable)
  - Disconnect
  - Restart
  - Stop
- Warning when a debug session exited without hitting any breakpoint
- Debug view to see Adapter/RPC log messages
- Testing
  - Fake debug adapter
    - Fake requests & events

---

Release Notes:

- N/A

---------

Co-authored-by: Piotr Osiewicz <24362066+osiewicz@users.noreply.github.com>
Co-authored-by: Anthony Eid <hello@anthonyeid.me>
Co-authored-by: Anthony <anthony@zed.dev>
Co-authored-by: Piotr Osiewicz <peterosiewicz@gmail.com>
Co-authored-by: Piotr <piotr@zed.dev>

crates/language/src/language.rs

@@ -73,8 +73,8 @@ pub use buffer::Operation;
 pub use buffer::*;
 pub use diagnostic_set::{DiagnosticEntry, DiagnosticGroup};
 pub use language_registry::{
-    AvailableLanguage, LanguageNotFound, LanguageQueries, LanguageRegistry,
-    LanguageServerBinaryStatus, QUERY_FILENAME_PREFIXES,
+    AvailableLanguage, BinaryStatus, LanguageNotFound, LanguageQueries, LanguageRegistry,
+    QUERY_FILENAME_PREFIXES,
 };
 pub use lsp::{LanguageServerId, LanguageServerName};
 pub use outline::*;
@@ -304,7 +304,7 @@ pub trait LspAdapterDelegate: Send + Sync {
     fn worktree_id(&self) -> WorktreeId;
     fn worktree_root_path(&self) -> &Path;
     fn exists(&self, path: &Path, is_dir: Option<bool>) -> bool;
-    fn update_status(&self, language: LanguageServerName, status: LanguageServerBinaryStatus);
+    fn update_status(&self, language: LanguageServerName, status: BinaryStatus);
     async fn language_server_download_dir(&self, name: &LanguageServerName) -> Option<Arc<Path>>;
 
     async fn npm_package_installed_version(
@@ -382,7 +382,7 @@ pub trait LspAdapter: 'static + Send + Sync {
                 } else {
                     delegate.update_status(
                         self.name(),
-                        LanguageServerBinaryStatus::Failed {
+                        BinaryStatus::Failed {
                             error: format!("{error:?}"),
                         },
                     );
@@ -586,7 +586,7 @@ async fn try_fetch_server_binary<L: LspAdapter + 'static + Send + Sync + ?Sized>
 
     let name = adapter.name();
     log::info!("fetching latest version of language server {:?}", name.0);
-    delegate.update_status(name.clone(), LanguageServerBinaryStatus::CheckingForUpdate);
+    delegate.update_status(name.clone(), BinaryStatus::CheckingForUpdate);
 
     let latest_version = adapter
         .fetch_latest_server_version(delegate.as_ref())
@@ -597,16 +597,16 @@ async fn try_fetch_server_binary<L: LspAdapter + 'static + Send + Sync + ?Sized>
         .await
     {
         log::info!("language server {:?} is already installed", name.0);
-        delegate.update_status(name.clone(), LanguageServerBinaryStatus::None);
+        delegate.update_status(name.clone(), BinaryStatus::None);
         Ok(binary)
     } else {
         log::info!("downloading language server {:?}", name.0);
-        delegate.update_status(adapter.name(), LanguageServerBinaryStatus::Downloading);
+        delegate.update_status(adapter.name(), BinaryStatus::Downloading);
         let binary = adapter
             .fetch_server_binary(latest_version, container_dir, delegate.as_ref())
             .await;
 
-        delegate.update_status(name.clone(), LanguageServerBinaryStatus::None);
+        delegate.update_status(name.clone(), BinaryStatus::None);
         binary
     }
 }