feat: add endpoints for restarting and refreshing live streams with appropriate lifecycle events

sample/src/main/java/com/dji/sample/manage/controller/LiveStreamController.java

@@ -100,6 +100,28 @@ public class LiveStreamController {
     }
 
     /**
+     * Restart live stream: stop then start, and broadcast restart lifecycle events.
+     * @param liveParam restart parameters (workspace_id, video_id required).
+     * @return
+     */
+    @PostMapping("/streams/restart")
+    public HttpResultResponse liveRestart(@RequestBody LiveTypeDTO liveParam) {
+        return liveStreamService.liveRestart(liveParam);
+    }
+
+    /**
+     * Refresh live stream: frontend-controlled refresh flow.
+     * Executes refreshStop (device stop without clearing sessions) + start + broadcast.
+     * Other clients reuse session_id and wait for MQTT push to auto-recover.
+     * @param liveParam refresh parameters (workspace_id, video_id, url_type required).
+     * @return
+     */
+    @PostMapping("/streams/refresh")
+    public HttpResultResponse liveRefresh(@RequestBody LiveTypeDTO liveParam) {
+        return liveStreamService.liveRefresh(liveParam);
+    }
+
+    /**
      * Session-aware stop: only removes the specified sessionId's viewer session.
      * Actual device stop is triggered only when all viewers have left.
      * @param liveParam Live streaming parameters (must include session_id from liveStart response).