added start cameras method

backend/app/classes/CamerasHandler.py

@@ -17,3 +17,11 @@ class CamerasHandler:
             cap.release()
             index += 1
         return [usb_devices[i] for i in arr]
+
+    @staticmethod
+    def start_cameras(usb_devices):
+        cameras = []
+        for device in usb_devices:
+            camera = cscore.UsbCamera(name='', dev=device.dev)
+            cameras.append(camera)
+        return cameras

backend/app/classes/SettingsManager.py

@@ -31,7 +31,7 @@ class SettingsManager(metaclass=Singleton):
 
     def _init_cameras(self):
         cameras = CamerasHandler.get_cameras()
-
+        
         for cam in cameras:
             if os.path.exists(os.path.join(self.cams_path, cam.name)):
                 self.cams[cam.name] = {}