feat: game lobby service

pkg/schema/fbs/notification.fbs

@@ -25,6 +25,12 @@ table LobbyMembershipRejectedEvent {
   game_id:string;
 }
 
+table LobbyMembershipBlockedEvent {
+  game_id:string;
+  membership_user_id:string;
+  reason:string;
+}
+
 table LobbyInviteCreatedEvent {
   game_id:string;
   inviter_user_id:string;
@@ -35,4 +41,14 @@ table LobbyInviteRedeemedEvent {
   invitee_user_id:string;
 }
 
+table LobbyRaceNameRegistrationEligibleEvent {
+  game_id:string;
+  race_name:string;
+  eligible_until_ms:int64;
+}
+
+table LobbyRaceNameRegisteredEvent {
+  race_name:string;
+}
+
 root_type GameTurnReadyEvent;