feat!: implemented multigame support (#34)

Reviewed-on: #34
Co-authored-by: Janis <janis.e.20@gmx.de>
Co-committed-by: Janis <janis.e.20@gmx.de>

knockoutwhistweb/app/controllers/MainMenuController.scala

@@ -0,0 +1,45 @@
+package controllers
+
+import auth.{AuthAction, AuthenticatedRequest}
+import logic.PodManager
+import play.api.*
+import play.api.mvc.*
+
+import javax.inject.*
+
+
+/**
+ * This controller creates an `Action` to handle HTTP requests to the
+ * application's home page.
+ */
+@Singleton
+class MainMenuController @Inject()(
+                                    val controllerComponents: ControllerComponents,
+                                    val authAction: AuthAction,
+                                    val podManager: PodManager
+                                  ) extends BaseController {
+
+  // Pass the request-handling function directly to authAction (no nested Action)
+  def mainMenu(): Action[AnyContent] = authAction { implicit request: AuthenticatedRequest[AnyContent] =>
+    Ok("Main Menu for user: " + request.user.name)
+  }
+
+  def index(): Action[AnyContent] = authAction { implicit request: AuthenticatedRequest[AnyContent] =>
+    Redirect(routes.MainMenuController.mainMenu())
+  }
+
+  def createGame(): Action[AnyContent] = authAction { implicit request: AuthenticatedRequest[AnyContent] =>
+    val gameLobby = podManager.createGame(
+      host = request.user,
+      name = s"${request.user.name}'s Game",
+      maxPlayers = 4
+    )
+    Redirect(routes.IngameController.game(gameLobby.id))
+  }
+
+  def rules(): Action[AnyContent] = {
+    Action { implicit request =>
+      Ok(views.html.mainmenu.rules())
+    }
+  }
+}