adding automatic world restoration

src/main/java/eu/mhsl/craftattack/worldmuseum/listener/BlockPlaceListener.java

@@ -0,0 +1,11 @@
+package eu.mhsl.craftattack.worldmuseum.listener;
+
+import net.minestom.server.event.player.PlayerBlockPlaceEvent;
+import java.util.function.Consumer;
+
+public class BlockPlaceListener implements Consumer<PlayerBlockPlaceEvent> {
+    @Override
+    public void accept(PlayerBlockPlaceEvent playerBlockPlaceEvent) {
+        playerBlockPlaceEvent.setCancelled(true);
+    }
+}