* fix(multi-stream) add new m-line when remote adds a second video source in p2p.
A new m-line needs to be added in the remote description when a new secondary video source is signaled by the peer.

* fix(TPC) Suppress lower layers only for screenshare tracks.
With multi-stream support enabled, an extra check for videoType for local track is needed to dtermine if the lower layers need to be suppressed.

* fix(TPC) Mark the direction inactive on inactive media connection.
If a new secondary video source is added on the jvb connection while p2p is active, make sure the direction is set to inactive on the jvb connection, so that no media is being sent out on the jvb connection.

* squash: Address review comments.

Do this even if the browser provides a non '-' string for streamId since we rely on this to generate the source name.

* fix: Set affiliation.

XEP-0045:
Affiliations are granted, revoked, and maintained based on the user’s bare JID, not the nick as with roles.

* squash: Fixes own revokeOwner.

Handle presence updates for multiple sources per remote endpoint.

Also switch to using signalingLayer.getPeerSourceInfo during remote track creation when source-name signaling is used.

We do not want the client to re-use the inactive transceivers that are associated with m-lines for removed remote tracks. Rejecting a m-line on source-remove clears it from the list of available transceivers.

This is needed for the track to be identified as a desktop track on the remote peer when the JitsiRemoteTrack is created.
Fixes https://github.com/jitsi/lib-jitsi-meet/issues/1649.

If there are more than one video track at pc creation time, add them sequencially to avoid renegotiation loop.

Fixes an issue where the local stats are not emitted in Unified plan after a track replace.

* Do not send analytics periodically.
* Stop sending e2eping after 5 responses (or 10 requests with no response).
* Pace requests based on conference size.
* Only send e2eping in one direction in a pair of endpoints.

* fix(multi-stream-support) Support muting of desktop track.

* fix(multi-stream) Always initiate responder renegotiation even for p2p.
This is needed since the new m-line is always added to the remote description.

* fix(multi-stream) Support multi-stream only on Unfied plan endpoints.

* fix(multi-stream) Advertise source-name signaling to Jicofo when supported.

* fix(JitsiLocalTrack): Remove unnecessary reject.

* fix: add the correct source name attribute for the second video track.

* squash: Address review comments.

Chrome doesn't render media when the SSRC is added back to the m-line after removing it because of source-remove->source-add from peer. Avoid renegotiations so that these source removes and adds are not sent to the peer after the track is replaced.

In P2P and unified mode, Chrome does not render the media if an SSRC is removed and the same one is added back (happens when the sender is camera muted->starts SS->stops SS->turns camera on). That is why SSRC was not being removed. However, mobile endpoints that are running in plan-b generate a new SSRC when the client switches between camera and screenshare. This will cause issues on a p2p receiver that is running in unified mode. Fixes https://github.com/jitsi/jitsi-meet/issues/11010.

This fixes an issue where replaceTrack fails when a muted track is being replaced with another track in Unified plan.

Fixes issue #1476
Alternative to PR #1487

Recycling the m-line by rejecting it and then re-using is causing issues where sometimes the track addition fails. When a new ssrc is added to an m-line that was rejected and port is changed back to the default port, sometimes the remote sdp returned by browser wouldn't contain the newly added ssrcs and the track addition fails as a result.
Error: No SSRC lines found in remote SDP for remote stream[msid=854882f8-audio-1,type=audio]
    at Ca._remoteTrackAdded (https://web-cdn.jitsi.net/meetjitsi_5885.2601/libs/lib-jitsi-meet.min.js?v=5885.2601:2:439103)
    at Ca._usesUnifiedPlan.onTrack (https://web-cdn.jitsi.net/meetjitsi_5885.2601/libs/lib-jitsi-meet.min.js?v=5885.2601:2:432207)
    at RTCPeerConnection.r (https://web-cdn.jitsi.net/meetjitsi_5885.2601/libs/lib-jitsi-meet.min.js?v=5885.2601:2:680736)
.

It's possible we get sender constraint messages while operations to
change the direction in the JVB session are in progress so we currently
have no predictable way to properly suspend video without races.

Since this will be solved when we move to transceivers, this is a
compromise we are making.

* feat(multi-stream-support) Add TrackStreamingStatus class
update JitsiRemoteTrack to init and dispose TrackStreamingStatus
stop emitting LASTN_ENDPOINT_CHANGED event when source name signaling is enabled
convert TrackStreamingStatus class to typescript

* rename methods and use TrackStreamingStatus enum

* update jdocs for JitsiConferenceEvents.FORWARDED_SOURCES_CHANGED

Fix having duplicated audio due to the JVB connection being re-activated
once the sender constraints change.

* feat: Adds a property to JitsiParticipant is hidden from recorder.

When hiddenFromRecorder is enable in config we check the presence for the flag (the jwt identity part).

* squash: Fixes comments.

The colibri class name for the source name sender constraints changed from SenderVideoConstraintsV2 to SenderSourceConstraints.
The new format is {colibriClass: 'SenderSourceConstraints', sourceName: 'b6746083-v0', maxHeight: 180}

* feat(multi-stream-support) Adjust presence and videoType message.
Adjust the sourceInfo for all the available local tracks. Do not add handlers for videoType changes on the peer since the videoType doesn't change when multiple stream support is enabled.

* fix(presence) Send the presence in old format for backwards compat.
Send the presence messages in both the old and new format when source name signaling is enabled and sending multiple streams is disabled.

* fix(JitsiConference) Send the videoType bridge msg after mute/unmute op is complete.

* ref(multi-stream-support) Throw if a track is being replaced with a track of different videoType.
This is not supported in the multi sender enabled mode.

* Address review comments.

The client doesn't add videoType to presence if the videoType is CAMERA since it is the default type.
Fixes https://github.com/jitsi/lib-jitsi-meet/issues/1649

When multi-stream-support is enabled, configure the encodings on all the local video sources.

Also, configure all the video tracks when the user changes the quality settings from UI.

The encodings for local video tracks are confiugured based on the SenderVideoConstraintsV2 constraints received from the bridge. The constraints are sourceName based. Also ignore enableLayerSuspension flag since it has been deprecated and layer suspension has been enabled by default. Also having it off makes screensharing on Chrome in unified plan not work as expected.

Subsequent attempts to join will show produce an error "[JitsiConference.js] : A coference with the same name has already been created!".

* feat(multi-stream-support) Add the support for multiple local video streams.
This feature is behind 'sendMultipleVideoStreams' config.js flag and is currently supported only on clients running in Unified plan mode.

* squash: Use the track index from source name to find the matching transceiver on unmute.

Messaging methods in lobby room
getLocalId to get the local lobby room id from jid
setMessageListener to listen for messages in lobby room

Reviewed-by: Fecri Kaan Ulubey <f.kaan93@gmail.com>

ref(lobby chat) refactor lobby chat api to conform to other existing lib-jitsi-meet apis

* feat(multi-stream-support) Handle SDP munging for multiple local/remote streams/ep.
A new SDPSimulcast class is added for handling SDP munging for local and remote descriptions to handle multiple streams for both local and remote endpoints. This new class will be used only for unified plan implentation. The sdp-simucast npm package will be used for plan-b and deprecated later when all the clients switch to unified plan.

* fix(build) fix building with TS code

Use the Babel preset for the webpack bundle since Babel 7 already
understands TS and ts-loader uses tsc instead, which we configure
differently.

* squash: Add unit test and address review comments.

Co-authored-by: Saúl Ibarra Corretgé <saghul@jitsi.org>