livekit-ffi/v0.12.50

Features

E2EE: allow setting key_ring_size and key_derivation_algorithm, update webrtc to m144

#921 by @onestacked

This PR uses this webrtc-sdk PR to configure the KDF.

I've tested this with https://codeberg.org/esoteric_programmer/matrix-jukebox and it is compatible with Element Call.

Fixed: https://github.com/livekit/rust-sdks/issues/796

Fixes

• Fix H.264 codec matching

add bounded buffer to audio_stream, and use 10 frames as the default

#945 by @xianshijing-lk

Send client os and os_version from rust

#952 by @MaxHeimbrock

Adds os_info crate as dependency and sends the data for client connections.