feat: add livekit_echo_vision_bot, fix: livekit _convert_input_video_image and write_frame_to_camera frame, and camera_out_is_live

[weedge]

feat:

• add livekit_echo_vision_bot and run it with config livekit_echo_vision_bot.json

  {
  "chat_bot_name": "LivekitEchoVisionBot",
  "room_name": "chat-room",
  "room_url": "",
  "token": "",
  "room_manager": {
  "tag": "livekit_room",
  "args": {
    "bot_name": "LivekitBot",
    "is_common_session": false
  }
  },
  "services": {},
  "config": {},
  "config_list": []
  }

  python -m src.cmd.bots.main -f config/bots/livekit_echo_vision_bot.json

fix:

• livekit _convert_input_video_image and write_frame_to_camera frame,
• camera_out_is_live false use itertools.cycle(List[ImageRawFrame]), true use asyncio.Queue