Wide variety of changes for release

src/main/java/eu/mhsl/minenet/minigames/api/Controller.java

@@ -31,5 +31,5 @@ public abstract class Controller<Q, R> implements Route {
         return new Gson().toJson(handle(req, response));
     }
 
-    public abstract R handle(Q request, Response response) throws Exception;
+    public abstract R handle(Q request, Response response);
 }

src/main/java/eu/mhsl/minenet/minigames/api/routes/closeRoom/CloseRoom.java

@@ -10,7 +10,7 @@ record Req(UUID room) {}
 record Resp() {}
 public class CloseRoom extends Controller<Req, Resp> {
     @Override
-    public Resp handle(Req request, Response response) throws Exception {
+    public Resp handle(Req request, Response response) {
         Room.deleteRoom(Room.getRoom(request.room()).orElseThrow());
         return new Resp();
     }

src/main/java/eu/mhsl/minenet/minigames/api/routes/createRoom/CreateRoom.java

@@ -10,7 +10,7 @@ record Req() {}
 record Resp(UUID uuid) {}
 public class CreateRoom extends Controller<Req, Resp> {
     @Override
-    public Resp handle(Req request, Response response) throws Exception {
+    public Resp handle(Req request, Response response) {
         Room createdRoom = Room.createOwnerlessRoom();
         return new Resp(createdRoom.uuid);
     }

src/main/java/eu/mhsl/minenet/minigames/api/routes/queueRoom/QueueRoom.java

@@ -3,17 +3,22 @@ package eu.mhsl.minenet.minigames.api.routes.queueRoom;
 import eu.mhsl.minenet.minigames.api.Controller;
 import eu.mhsl.minenet.minigames.api.QueuedPlayerRooms;
 import eu.mhsl.minenet.minigames.instance.room.Room;
+import net.minestom.server.MinecraftServer;
 import spark.Response;
 
 import java.util.UUID;
 
 record Req(UUID player, UUID room) {}
-record Resp() {}
+record Resp(String error) {}
 public class QueueRoom extends Controller<Req, Resp> {
     @Override
-    public Resp handle(Req request, Response response) throws Exception {
-        if(Room.getRoom(request.room()).isEmpty()) throw new Exception("Room not found");
+    public Resp handle(Req request, Response response) {
+        if(Room.getRoom(request.room()).isEmpty()) return new Resp("Raum nicht gefunden");
+        if(MinecraftServer.getConnectionManager().getOnlinePlayers().size() >= Integer.parseInt(System.getProperty("minenet.playerlimit", "999"))) {
+            return new Resp("Der Server hat eine Spielerzahllimitierung und ist bereits voll!");
+        }
+
         QueuedPlayerRooms.queuePlayer(request.player(), request.room());
-        return new Resp();
+        return new Resp(null);
     }
 }