Dahua UTC Controller for Switching Different Formats

> Support different formats(HDCVI/AHD/HDTVI/CVBS) switch, which is to satisfy the requirements of different storage deviceenvironments for clients.
> Various format indicator lights, which makes it convenient forusers to check the current format status and prompt if theformat switch is successful.
> Support OSD control and the electric zoom function control in CVBS mode