Support muting before room is connected (#28)

Add experimental support for video tracks (#26)

This add (experimental) support for handling LiveKit video tracks.

Add support for updating call state (#22)

Add support for `updateCallState` and also pass through everything else
so as to support future fields without requiring an SDK update.

Adding support for agent_reaction (#21)

Added a new enum for AgentReaction, modified the ClientToolReturnType to
optionally use agentReaction, and updated the handleClientToolResult
method to pass agentReaction if present.

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Co-authored-by: Mike Depinet <mike@fixie.ai>

Websocket client tool results (#17)

This fixes large tool results sometimes failing to reach our server

Add setOutputMedium (#13)

Add client tools (#12)

Also fix some deviations from our other SDKs, in particular:
  * Kills UltravoxSessionState
  * Simplifies event names
  * Adds documentation for public attributes

add toggles for mute (#11)

switching up the way mute/unmute works (#10)

removing mute(), unmute(), and isMuted(). adding muteMic(), unmuteMic(),
isMicMuted(), muteSpeaker(), unmuteSpeaker(), and isSpeakerMuted().

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Co-authored-by: Mike Depinet <mike@fixie.ai>

add mute, upgrade livekit (#9)

can't implement mute button in client app w/out interfacing with
livekit's `setMicrophoneEnabled()`. wrapping that in the SDK here. added
`mute()`, `unmute()`, `toggleMute()` and `isMicrophoneMuted()`. also
upgraded to latest version of livekit client.