create datetime mixin

src/main.js

@@ -11,6 +11,7 @@ import Layout from "./layouts/Layout.vue";
 import socket from "./mixins/socket";
 import theme from "./mixins/theme";
 import mobile from "./mixins/mobile";
+import datetime from "./mixins/datetime";
 import Dashboard from "./pages/Dashboard.vue";
 import DashboardHome from "./pages/DashboardHome.vue";
 import Details from "./pages/Details.vue";
@@ -80,7 +81,8 @@ const app = createApp({
     mixins: [
         socket,
         theme,
-        mobile
+        mobile,
+        datetime
     ],
     data() {
         return {