Clean up room connection status

[nandito]

Summary

Clean up SDK's api surface before the beta release.

Changes

• Remove accepted state from roomConnectionStatus
  > This state is not used for anything, it should be safe to remove.
• Rename rejected state to knock_rejected
  > Use a more descriptive status name when a knock request gets rejected on a locked room.
• Rename roomConnectionStatus -> connectionStatus
• Remove mostRecentChatMessage
• Remove startScreenshareError
• Replace isStartingScreenshare with localScreenshareStatus and fix the missing state reset when screen share stops
• Make roomConnectionOptions optional
  > Use default localMediaConstraints' audio, video: true.
• Use the default media constraints in the related story
  > useLocalMedia already has a default option and the same value was
  passed in the story. This commit removes this unnecessary param.
• Do not expose newJoiner and streams on remoteParticipant
  > These are internal props, no need to expose them to in the useRoomConnection's state.

Test plan

knock:

1. Use the sdk with a locked room
2. Join the room with a host key
3. Knock the room with a guest participant
4. Reject the knock with the host => room connection status should be knock_rejected

screenshare status:

1. start/stop screenshares and inspect the changes of the state's localScreenshareStatus
2. initially it is undefined
3. starting a screenshare => starting
4. when screenshare is in progress => active
5. stop screenshare either by the stopScreenshare action or by the browser's native alert => undefined again

useRoomConnection's default options:

1. use the sdk's useRoomConnection with a roomUrl only, like useRoomConnection(roomUrl)
2. it should connect with the default media constraints

newJoiner and streams props in remoteParticipant

1. console.log the state or state.remoteParticipants in your demo app
2. join the room with 2 participants
3. check the logs: newJoiner and streams props shouldn't be there.

Make sure your demo app works after migrating to this version 😇 .

[kevinwhereby]

awsome!

[kevinwhereby]

Currently elbow deep in typescript trying to make a constructor for these events that types them automatically 😂 😭

type RoomEventKey = keyof RoomEventsMap;
type ArgType<T> = T extends (arg: infer U) => unknown ? U : never;
type RoomEventHandler<T extends RoomEventKey> = RoomEventsMap[T];
type RoomEvent<T extends RoomEventKey> = ArgType<RoomEventHandler<T>>;
type RoomEventPayload<T extends RoomEventKey> = RoomEvent<T> extends CustomEvent<infer U> ? U : never;

function constructCustomEvent<T extends RoomEventKey>(
    eventType: T,
    eventInitDict: { detail: RoomEventPayload<T> }
): RoomEvent<T> {
    return new CustomEvent(eventType, eventInitDict);
}

SO close:

except this :(

EDIT: OK I got it, was just being too explicit with the types. I'll do up another PR for after this one, as it's purely a typing change (plus a function wrapper) it can wait until after launch