Update protocol

[dennwc]

Update protocol. Quite a few changes:

• Transcription language moved to a segment. FFI and API updated to reflect it. This removes a field on root transcription.
• Pick up enable_transcoding for Ingress.
• Support SIP Inbound/Outbound Trunk API.
• Use SIP grants.
• Handle participant attributes.

I'm not sure the change for attributes is complete. I couldn't find any code that updated name or metadata based on update events. So not sure where I should add attributes updates :thinking:

[theomonnom]

make sure to bump minor on all affected crates. not familiar enough with the rest of the codebase to do a full review

let's not bump for this PR, we need more stuff before bumping this version

[theomonnom]

I'm not sure the change for attributes is complete. I couldn't find any code that updated name or metadata based on update events. So not sure where I should add attributes updates 🤔

Are you talking about these events? https://github.com/livekit/rust-sdks/blob/9c2a467751f1698532393bee95b96cba71af78b3/livekit/src/room/mod.rs#L119C5-L119C31

[dennwc]

These too! Need to create a new one there :+1:

But also, aren't these events supposed to update ParticipantInfo in the SDK? I haven't found any place that updates metadata based on received signaling updates.

[theomonnom]

Seems like we update the metadata here https://github.com/livekit/rust-sdks/blob/9c2a467751f1698532393bee95b96cba71af78b3/livekit/src/room/participant/mod.rs#L141 and for name https://github.com/livekit/rust-sdks/blob/9c2a467751f1698532393bee95b96cba71af78b3/livekit/src/room/participant/mod.rs#L134

[dennwc]

@theomonnom I added the update handler too. Not sure if it's a good idea to clone the new metadata for the changed callback :thinking: