Introduce chat database integration with message persistence and initialization.

database/src/main/java/com/alttd/altitudeweb/setup/Connection.java

@@ -40,6 +40,7 @@ public class Connection {
         InitializeProxyPlaytime.init();
         InitializeDiscord.init();
         InitializeVotingPlugin.init();
+        InitializeChat.init();
     }
 
     @FunctionalInterface