add(ui): add map forge scenes #63

.idea/workspace (conflicted copy 2023-12-23 155531).xml

...ttgart/battlearena/Controller/CommunityMapController.java

..._stuttgart/battlearena/Controller/MainMenuController.java

..._stuttgart/battlearena/Controller/MapForgeController.java

...gart/battlearena/Controller/MenuBorderPaneController.java

src/main/resources/fxml/CommunityMaps.fxml

src/main/resources/fxml/MainMenu.fxml

src/main/resources/fxml/MapForge.fxml

src/main/resources/fxml/MenuBorderPane.fxml

src/main/resources/fxml/Multiplayer.fxml

src/main/resources/styles/style.css