debugger: Remember pane layout from previous debugger session (#28692)

This PR makes a debugger's pane layout persistent across session's that
use the same debug adapter.

Release Notes:

- N/A

---------

Co-authored-by: Piotr Osiewicz <24362066+osiewicz@users.noreply.github.com>
Co-authored-by: Cole Miller <m@cole-miller.net>

crates/project/src/debugger/session.rs

@@ -30,7 +30,8 @@ use dap::{
 use futures::channel::oneshot;
 use futures::{FutureExt, future::Shared};
 use gpui::{
-    App, AppContext, AsyncApp, BackgroundExecutor, Context, Entity, EventEmitter, Task, WeakEntity,
+    App, AppContext, AsyncApp, BackgroundExecutor, Context, Entity, EventEmitter, SharedString,
+    Task, WeakEntity,
 };
 use rpc::AnyProtoClient;
 use serde_json::{Value, json};
@@ -125,6 +126,7 @@ type UpstreamProjectId = u64;
 struct RemoteConnection {
     _client: AnyProtoClient,
     _upstream_project_id: UpstreamProjectId,
+    _adapter_name: SharedString,
 }
 
 impl RemoteConnection {
@@ -996,6 +998,7 @@ impl Session {
     ) -> Self {
         Self {
             mode: Mode::Remote(RemoteConnection {
+                _adapter_name: SharedString::new(""), // todo(debugger) we need to pipe in the right values to deserialize the debugger pane layout
                 _client: client,
                 _upstream_project_id: upstream_project_id,
             }),
@@ -1044,6 +1047,13 @@ impl Session {
         &self.capabilities
     }
 
+    pub fn adapter_name(&self) -> SharedString {
+        match &self.mode {
+            Mode::Local(local_mode) => local_mode.adapter.name().into(),
+            Mode::Remote(remote_mode) => remote_mode._adapter_name.clone(),
+        }
+    }
+
     pub fn configuration(&self) -> Option<DebugAdapterConfig> {
         if let Mode::Local(local_mode) = &self.mode {
             Some(local_mode.config.clone())