add messages api

src/utils/messagesApi.js

@@ -0,0 +1,12 @@
+const domains = [
+  "http://dev.kandrusyak.ru",
+]
+window.addEventListener("message", messageHandler, false);
+function messageHandler(event) {
+  if (!domains.includes(event.origin))
+    return;
+  const { action, key, value } = event.data
+  if (action === 'save'){
+    window.localStorage.setItem(key, JSON.stringify(value))
+  }
+}