Add support for xtend_tuya

[azerty9971]

This PR adds support for Tuya IPC camera using xtend_tuya as a WHEP gateway.

Please don't hesitate to refactor anything that you feel is badly written, I'm not at all a GO developer but I tried my best to keep the code as clean as I could :).

If you want to test this yourself, don't hesitate to contact me at devun999999@gmail.com

This should fix the issue #1345 and is related to issue #315 and PR #1379

Don't hesitate to make any comment.

Have a nice day,
Azerty

[felipecrs]

My opinion:

go2rtc supports importing WebRTC cameras from Home Assistant through the hass source (check here).

It would be nice if xtend_tuya added this WebRTC support through Home Assistant's standards, hoping that maybe go2rtc's hass source would pick it up without needing an extra source.

Code-wise I know nothing about this, so maybe this comment is completely irrelevant.

In case it is relevant: Home Assistant is overhauling their WebRTC implementation, going away from rtsp_to_webrtc in favor of having go2rtc bundled and even enabled by default in 2024.11.0. Maybe it's better to wait for it before start implementing this.