[mirotalksfu] - make widget fully configurable via config.js and .env

public/views/landing.html

@@ -48,6 +48,7 @@
         <!-- Js scripts -->
         <script defer src="../js/Brand.js"></script>
         <script async src="../js/Umami.js"></script>
+        <script defer src="../js/Widget.js"></script>
 
         <script defer src="https://cdn.jsdelivr.net/npm/sweetalert2@11.4.8"></script>
         <script src="https://unpkg.com/animejs@3.0.1/lib/anime.min.js"></script>