This expose a new GetSupportedH265Level API for WebRTC external
factories to calculate H.265 levels to be use for SDP negotation.
Bug: webrtc:13485
Change-Id: Ib420da2b9b1b7af00129294be5b3efec172e8faf
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/345544
Commit-Queue: Sergey Silkin <ssilkin@webrtc.org>
Reviewed-by: Philip Eliasson <philipel@webrtc.org>
Reviewed-by: Sergey Silkin <ssilkin@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#42079}