feat: Stop implementation

src/MaaCore/Task/Miscellaneous/StartGameTaskPlugin.cpp

@@ -9,6 +9,10 @@ bool StartGameTaskPlugin::start_game_with_retries(size_t pipe_data_size_limit, b
 {
     int extra_runs = 0;
     for (int i = 0; i < 30; ++i) {
+        if (need_exit()) {
+            return false;
+        }
+
         if (!ctrler()->start_game(m_client_type)) {
             return false;
         }