added fxml file

src/main/java/brainfuck/interpreter/Controller.java

@@ -0,0 +1,4 @@
+package brainfuck.interpreter;
+
+public class Controller {
+}

src/main/java/resources/fxml/layout.fxml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<?import java.lang.*?>
+<?import java.util.*?>
+<?import javafx.scene.*?>
+<?import javafx.scene.control.*?>
+<?import javafx.scene.layout.*?>
+
+<AnchorPane xmlns="http://javafx.com/javafx"
+            xmlns:fx="http://javafx.com/fxml"
+            fx:controller="$CONTROLLER_NAME$"
+            prefHeight="400.0" prefWidth="600.0">
+
+</AnchorPane>