Backport of "avfvideosrc: Explicitly request video permission on macOS 10.14+" into 1.16
requested to merge tpm/gst-plugins-bad:backport-mr-885-into-1.16-mojave_audio_video_permissions into 1.16
Backport of !885 (merged) "avfvideosrc: Explicitly request video permission on macOS 10.14+".
Commits:
- d29012a7 avfvideosrc: Explicitly request device video permissions for macOS 10.14+