Main menu and save function to json file implemented.

tilorswift/js/menu/MainMenuEntry.js

@@ -0,0 +1,22 @@
+export default class MainMenuEntry
+{
+    constructor(title, event)
+    {
+        this.title = title;
+        this.event = event;
+    }
+
+    getElement()
+    {
+        let htmlElement = document.createElement('li');
+        htmlElement.innerText = this.title;
+        htmlElement.addEventListener(
+            'click',
+            () => {
+                window.dispatchEvent(new this.event());
+            }
+        );
+
+        return htmlElement;
+    }
+}