pwa: update config and icon

nuxt.config.js

@@ -152,11 +152,22 @@ export default {
 
   // https://pwa.nuxtjs.org/manifest
   pwa: {
-    manifest: {
-      short_name: 'monnaie-libre',
+    meta: {
+      name: 'Monnaie Libre',
+      lang: 'fr',
       theme_color: '#5b21b6',
+      ogHost: 'monnaie-libre.fr',
+      twitterCard: 'summary_large_image',
+      twitterSite: '@monnaie_libre',
+      twitterCreator: '@monnaie_libre',
+    },
+    manifest: {
+      name: 'Monnaie Libre',
+      short_name: 'monnaie-libre.fr',
       lang: 'fr',
-      useWebmanifestExtension: false,
+    },
+    icon: {
+      fileName: 'icon-app.png',
     },
   },