add froggit favicon

docusaurus.config.js

@@ -9,7 +9,7 @@ module.exports = {
   baseUrl: "/",
   onBrokenLinks: "throw",
   onBrokenMarkdownLinks: "warn",
-  favicon: "img/favicon.ico",
+  favicon: "img/favicon/favicon.ico",
   organizationName: "facebook", // Usually your GitHub org/user name.
   projectName: "docusaurus", // Usually your repo name.
   themeConfig: {

static/img/favicon/site.webmanifest

+{"name":"","short_name":"","icons":[{"src":"/android-chrome-192x192.png","sizes":"192x192","type":"image/png"},{"src":"/android-chrome-512x512.png","sizes":"512x512","type":"image/png"}],"theme_color":"#ffffff","background_color":"#ffffff","display":"standalone"}