Re-enable SpotCAM WebRTC image streaming

[mhidalgo-bdai]

As of #126, we have disabled WebRTC image streaming due to H264 codec issues:

[h264 @ 0x787898001340] non-existing PPS 0 referenced
[h264 @ 0x787898001340] decode_slice_header error
[h264 @ 0x787898001340] no frame!

Issue is not on the robot itself, as the the live stream in a browser works just fine. It may be in the dependencies our wrapper and BD examples use (aiortc, basically), but it's unclear.

[g1y5x3]

Hi, regarding this issue, what I have found out is that if you limit the target bit rate through the sdk (2,000,000 for the case I just tested), this wrapper worked just fine. I also set the view to be only mech_full in this example since my current work is not gona use others for now.

[g1y5x3]

I made a thermal image publisher node and tested on the spotCAM that I have access to. It works well.