feat: stream room updates SSE endpoint

via subscription to redis with enriched channel

rooms/room.go

@@ -35,10 +35,11 @@ func (r *Room)InitMaps() {
 // if you are speaking - change nothing
 // if nobody is speaking, set this person as a first speaker
 func (r *Room) RaiseHand(p PersonId, gesture HandGesture) Room {
-	if (r.CurrentSpeaker == p) {
-		// if person already speaking, should first end speaking
-		return *r
-	}
+	// TODO This is temporary
+	// if (r.CurrentSpeaker == p) {
+	// 	// if person already speaking, should first end speaking
+	// 	return *r
+	// }
 	r.ParticipantHands[p] = gesture
 	if r.CurrentSpeaker == PersonId(0) {
 		r.CurrentSpeaker = p