feat: add isConnected method to CameraWorker and is_connected method to CameraController

core/camera/camera_controller.py

@@ -88,6 +88,9 @@ class CameraWorker(QObject):
             qimg = QImage(rgb_image.data, w, h, ch * w, QImage.Format.Format_RGB888)
             pixmap = QPixmap.fromImage(qimg)
             self.frame_ready.emit(pixmap)
+    
+    def isConnected(self):
+        return self.is_connected
 
 
 class CameraController(QObject):
@@ -143,4 +146,7 @@ class CameraController(QObject):
         self._start_stream_requested.emit()
 
     def stop_stream(self) -> None:
-        self._stop_stream_requested.emit()
+        self._stop_stream_requested.emit()
+    
+    def is_connected(self):
+        return self._worker.isConnected()