implement Launcher.java

src/main/java/workshop/Launcher.java

@@ -4,6 +4,7 @@ import javafx.application.Application;
 
 public class Launcher {
     public static void main(String[] args) {
-        // TODO: Launch the JavaFX application by calling Application.launch(Main.class)
+
+        Application.launch(Main.class);
     }
 }