changed some code for better compatibility with IntelliJ

src/main/java/workshop/Launcher.java

@@ -0,0 +1,9 @@
+package workshop;
+
+import javafx.application.Application;
+
+public class Launcher {
+    public static void main(String[] args) {
+        // TODO: Launch the JavaFX application by calling Application.launch(Main.class)
+    }
+}