added more logic for the server state diagram

Projekte/mdga/model/src/main/java/pp.mdga/server/PlayPowerCard.java

@@ -0,0 +1,7 @@
+package pp.mdga.server;
+
+public class PlayPowerCard extends ServerState {
+    public PlayPowerCard(ServerState parent, ServerGameLogic logic) {
+        super(parent, logic);
+    }
+}