Spielablauf (#11)

* added Spielablauf and added various things like Card classes etc.
Co-authored-by: Tobias <tibistruppi.te@gmail.com>

src/main/java/org/schafkopf/FrontendEndpointCreator.java

@@ -0,0 +1,23 @@
+package org.schafkopf;
+
+import org.eclipse.jetty.websocket.server.JettyServerUpgradeRequest;
+import org.eclipse.jetty.websocket.server.JettyServerUpgradeResponse;
+import org.eclipse.jetty.websocket.server.JettyWebSocketCreator;
+
+/**
+ * Creater to make new Instances of the FrontendConnection.
+ */
+public class FrontendEndpointCreator implements JettyWebSocketCreator {
+  private BackendServer backendServer;
+
+  public FrontendEndpointCreator(BackendServer backendServer) {
+    this.backendServer = backendServer;
+  }
+
+  @Override
+  public Object createWebSocket(
+      JettyServerUpgradeRequest jettyServerUpgradeRequest,
+      JettyServerUpgradeResponse jettyServerUpgradeResponse) {
+    return new FrontendEndpoint(this.backendServer);
+  }
+}