Added Progressive Web App support for Etherpad (#6411)

src/node/hooks/express/pwa.ts

@@ -0,0 +1,32 @@
+import {ArgsExpressType} from "../../types/ArgsExpressType";
+const settings = require('../../utils/Settings');
+
+const pwa = {
+  name: settings.title || "Etherpad",
+  short_name: settings.title,
+  description: "A collaborative online editor",
+  icons: [
+    {
+      "src": "/static/skins/colibris/images/fond.jpg",
+      "sizes": "512x512",
+      "type": "image/png"
+    },
+    {
+      "src": "/favicon.ico",
+      "sizes": "64x64 32x32 24x24 16x16",
+      type: "image/png"
+    }
+  ],
+  start_url: "/",
+  display: "fullscreen",
+  theme_color: "#0f775b",
+  background_color: "#0f775b"
+}
+
+exports.expressCreateServer = (hookName:string, args:ArgsExpressType, cb:Function) => {
+  args.app.get('/manifest.json', (req:any, res:any) => {
+    res.json(pwa);
+  });
+
+  return cb();
+}