More robust API option that allows to fully initialize TS when created. Bug: webrtc:13663 Change-Id: I42c38612ef772eb6d0bbde49d04ea39332a0e3c7 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/255821 Reviewed-by: Sam Zackrisson <saza@webrtc.org> Commit-Queue: Alessio Bazzica <alessiob@webrtc.org> Cr-Commit-Position: refs/heads/main@{#36490}