Add BauSystem module

Fix ci java version
Fix LinkageProcessor

LobbySystem/src/de/steamwar/lobby/particle/elements/OnlySelf.java

@@ -0,0 +1,21 @@
+package de.steamwar.lobby.particle.elements;
+
+import de.steamwar.lobby.particle.ParticleElement;
+import de.steamwar.lobby.particle.ParticleTickData;
+
+public class OnlySelf extends DelegatingParticleElement {
+
+    public OnlySelf(ParticleElement particleElement) {
+        super(particleElement);
+    }
+
+    @Override
+    public String attribute() {
+        return null;
+    }
+
+    @Override
+    public void tick(ParticleTickData particleTickData) {
+        particleElement.tick(particleTickData.onlySelf());
+    }
+}