Change lobby command to error upon making a duplicate lobby channel

.env.template

@@ -7,7 +7,7 @@
 # any secret values.
 
 BOT_TOKEN=
-BOT_VER=3.0.1
+BOT_VER=3.0.2
 BOT_AUTHOR=Vylpes
-BOT_DATE=24 Apr 2022
+BOT_DATE=09 May 2022
 BOT_OWNERID=147392775707426816

src/commands/501231711271780357/lobby.ts

@@ -116,6 +116,15 @@ export default class Lobby extends Command {
             return;
         }
 
+        const lobby = await eLobby.FetchOneByChannelId(channel.id);
+
+        if (lobby) {
+            const errorEmbed = new ErrorEmbed(context, "This channel has already been setup.");
+            errorEmbed.SendToCurrentChannel();
+            
+            return;
+        }
+
         const entity = new eLobby(channel.id, role.id, cooldown, gameName);
         await entity.Save(eLobby, entity);