Permissions bug

[Vichy97]

Denying permissions causes it to continually request permissions until they are granted.

[caleb-allen]

Would love some kind of callback to handle permission rejections. Otherwise I'll probably handle permissions before ever running camerakit code

[austinkettner]

Noted!

[huntj88]

we had a separate issue where the permission dialog was never shown on certain devices. working from home today, so i'll update it with a one of those devices