Mirror front camera

[blurtime]

This little one-liner mirrors the front camera videos which before didn't look like the preview while recording (what I was talking about in the issue):
connection.isVideoMirrored = (connection.isVideoMirroringSupported && device.position == .front && mirrorFrontCamera)
mirrorFrontCamera could be made accessible to the user but I didn't bother doing this since that would mean, one would also have to rewrite the createCamView() function, add this variable to the HybridCamView class and I only need it mirrored. Just an idea... Works without mirrorFrontCamera, too, of course.

I also changed the standard camera to .front. But that's not important.

[eonist]

Maybe we should just mirror it by default? I'm not a fan of adding additional state to classes if its not needed. State complexities architecture and maintainability.

[blurtime]

Sounds great! All the social network apps everyone uses also do it so I guess it shouldn't be bad.
I haven't checked this yet but there are some weird errors occurring since I changed the standard camera to .front but it might be related to a couple of other changes I have made so maybe only take the one-liner if you merge it for now :) I'll check tomorrow what is causing these errors...