Also initial implementation wrapping the libaom AV1 encoder.
Note that for now this is intended for prototype purposes.
Bug: none
Change-Id: Iac42ca4aecb6a204601c9f00bfb300e3eda3c4f4
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/306181
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Commit-Queue: Philip Eliasson <philipel@webrtc.org>
Reviewed-by: Erik Språng <sprang@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#42108}
