Main menu and save function to json file implemented.

tilorswift/js/menu/MainMenu.js

@@ -0,0 +1,27 @@
+export default class MainMenu
+{
+    constructor(id)
+    {
+        this.id = id;
+        this.menuGroups = [];
+    }
+
+    addMenuGroup(group)
+    {
+        this.menuGroups.push(group);
+    }
+
+    getElement()
+    {
+        let htmlElement = document.createElement('div');
+        htmlElement.id = this.id;
+
+        this.menuGroups.forEach(
+            (group) =>{
+                htmlElement.appendChild(group.getElement());
+            }
+        );
+
+        return htmlElement;
+    }
+}