extension: Update DAP extension API (#32448)

- DAP schemas will be stored in `debug_adapters_schemas` subdirectory in
extension work dir.
- Added Debug Config integration and such.

Release Notes:

- N/A

crates/extension/src/extension_manifest.rs

@@ -89,6 +89,8 @@ pub struct ExtensionManifest {
     pub capabilities: Vec<ExtensionCapability>,
     #[serde(default)]
     pub debug_adapters: Vec<Arc<str>>,
+    #[serde(default)]
+    pub debug_locators: Vec<Arc<str>>,
 }
 
 impl ExtensionManifest {
@@ -277,6 +279,7 @@ fn manifest_from_old_manifest(
         snippets: None,
         capabilities: Vec::new(),
         debug_adapters: vec![],
+        debug_locators: vec![],
     }
 }
 
@@ -305,6 +308,7 @@ mod tests {
             snippets: None,
             capabilities: vec![],
             debug_adapters: Default::default(),
+            debug_locators: Default::default(),
         }
     }