feat: add secret settings manager and migration for legacy settings

- Implemented SecretSettingsManager to handle secret settings with encryption.
- Added functionality to migrate legacy plaintext settings into encrypted storage.
- Introduced methods for setting, getting, and clearing secret settings.
- Created tests for verifying the migration and canonicalization of secret settings.
- Updated app state to handle service updates via socket communication.
- Added interface for push service updates to manage service state changes.

ts_interfaces/requests/services.ts

@@ -228,3 +228,16 @@ export interface IReq_PushServiceLog extends plugins.typedrequestInterfaces.impl
   };
   response: {};
 }
+
+export interface IReq_PushServiceUpdate extends plugins.typedrequestInterfaces.implementsTR<
+  plugins.typedrequestInterfaces.ITypedRequest,
+  IReq_PushServiceUpdate
+> {
+  method: 'pushServiceUpdate';
+  request: {
+    action: 'created' | 'updated' | 'deleted' | 'started' | 'stopped';
+    serviceName: string;
+    service?: data.IService;
+  };
+  response: {};
+}