1. notification via SW 2.manifest json for home screen app 3. icons for mobile/desktop shortcut app

public/manifest.json

@@ -0,0 +1,52 @@
+{
+  "id": "/",
+  "start_url": "/",
+  "name": "Convene - Chat for everyone ",
+  "short_name": "Convene",
+  "theme_color": "#FFFFFF",
+  "background_color": "#FFFFFF",
+  "display": "standalone",
+  "icons": [
+    {
+      "src": "/icons/icon-72x72.png",
+      "sizes": "72x72",
+      "type": "image/png"
+    },
+    {
+      "src": "/icons/icon-96x96.png",
+      "sizes": "96x96",
+      "type": "image/png"
+    },
+    {
+      "src": "/icons/icon-128x128.png",
+      "sizes": "128x128",
+      "type": "image/png"
+    },
+    {
+      "src": "/icons/icon-144x144.png",
+      "sizes": "144x144",
+      "type": "image/png"
+    },
+    {
+      "src": "/icons/icon-152x152.png",
+      "sizes": "152x152",
+      "type": "image/png"
+    },
+    {
+      "src": "/icons/icon-192x192.png",
+      "sizes": "192x192",
+      "type": "image/png"
+    },
+    {
+      "src": "/icons/icon-384x384.png",
+      "sizes": "384x384",
+      "type": "image/png"
+    },
+    {
+      "src": "/icons/icon-512x512.png",
+      "sizes": "512x512",
+      "type": "image/png"
+    }
+  ],
+  "splash_pages": null
+}