Mostly working websocket stuff, some message weirdness at the moment...

shared_models/lib/jwt.dart

@@ -6,10 +6,13 @@ part 'jwt.g.dart';
 class JWTBody {
   String uuid;
   String roomUuid;
+  String roomCode;
+  // Issued at in epoch seconds
   int iat;
+  // Expires at in epoch seconds
   int exp;
 
-  JWTBody({required this.uuid, required this.roomUuid, required this.iat, required this.exp});
+  JWTBody({required this.uuid, required this.roomUuid, required this.roomCode, required this.iat, required this.exp});
 
   factory JWTBody.fromJson(Map<String, dynamic> json) => _$JWTBodyFromJson(json);