add mount of menu

fix store usage

add page loader

src/lib/dom.js

@@ -1,11 +1,13 @@
 const waitContainer = async (selector) => {
-  new Promise((resolve) => {
-    setTimeout(() => {
-      const container = document.querySelector(selector)
+  return new Promise((resolve) => {
+    const container = document.querySelector(selector)
 
-      if (container) {
-        resolve(selector, container)
-      }
+    if (container) {
+      return resolve(selector, container)
+    }
+
+    setTimeout(() => {
+      waitContainer(selector)
     }, 50)
   })
 }