feat(stream)!: remove limit on concurrent sessions and allow quitting apps with active sessions (#3325)

src/rtsp.h

@@ -48,9 +48,19 @@ namespace rtsp_stream {
   void
   launch_session_clear(uint32_t launch_session_id);
 
+  /**
+   * @brief Get the number of active sessions.
+   * @return Count of active sessions.
+   */
   int
   session_count();
 
+  /**
+   * @brief Terminates all running streaming sessions.
+   */
+  void
+  terminate_sessions();
+
   void
   rtpThread();