ios: fix link error for libuiview and libpictureinpicturecontroller

Undefined symbols for architecture arm64:
  "_CGRectZero", referenced from:
      -[VLCVideoUIView viewContainerBounds] in libuiview_window_plugin_la-VLCVideoUIView.o

Undefined symbols for architecture arm64:
  "_CACurrentMediaTime", referenced from:
      -[VLCPictureInPictureController pictureInPictureControllerTimeRangeForPlayback:] in libpictureinpicturecontroller_plugin_la-VLCPictureInPictureController.o
  "_CMTimeGetSeconds", referenced from:
      -[VLCPictureInPictureController pictureInPictureController:skipByInterval:completionHandler:] in libpictureinpicturecontroller_plugin_la-VLCPictureInPictureController.o
  "_CMTimeMakeWithSeconds", referenced from:
      -[VLCPictureInPictureController pictureInPictureControllerTimeRangeForPlayback:] in libpictureinpicturecontroller_plugin_la-VLCPictureInPictureController.o
  "_CMTimeRangeMake", referenced from:
      -[VLCPictureInPictureController pictureInPictureControllerTimeRangeForPlayback:] in libpictureinpicturecontroller_plugin_la-VLCPictureInPictureController.o
  "_kCMTimeNegativeInfinity", referenced from:
      -[VLCPictureInPictureController pictureInPictureControllerTimeRangeForPlayback:] in libpictureinpicturecontroller_plugin_la-VLCPictureInPictureController.o
  "_kCMTimePositiveInfinity", referenced from:
      -[VLCPictureInPictureController pictureInPictureControllerTimeRangeForPlayback:] in libpictureinpicturecontroller_plugin_la-VLCPictureInPictureController.o