This demo use APIs which esp_hid component provided to create a BT, BLE or Bluetooth dual mode hid device. Users can choose mode by setting `HID_DEV_MODE`.
The BT hid device plays as a mouse. When the connection is successfully established, users can follow the usage below to operate the 'mouse'.
The BLE hid device plays as a remote control. When the connection is successfully established, the remote control will set volume up and down periodically.