extension: Add debug_adapters to extension manifest (#30676)

Also pass worktree to the get_dap_binary.

Release Notes:

- N/A

crates/eval/src/eval.rs

@@ -422,6 +422,7 @@ pub fn init(cx: &mut App) -> Arc<AgentAppState> {
     let extension_host_proxy = ExtensionHostProxy::global(cx);
 
     language::init(cx);
+    debug_adapter_extension::init(extension_host_proxy.clone(), cx);
     language_extension::init(extension_host_proxy.clone(), languages.clone());
     language_model::init(client.clone(), cx);
     language_models::init(user_store.clone(), client.clone(), fs.clone(), cx);