refactor: update to ionic v8

refactor: remove deprecated @ionic-native/core (replaced by
@awesome-cordova-plugins/core)

frontend/app/package.json

@@ -78,7 +78,7 @@
     "@capacitor/share": "6.0.1",
     "@capacitor/splash-screen": "6.0.1",
     "@ionic-native/core": "5.36.0",
-    "@ionic/angular": "7.8.0",
+    "@ionic/angular": "8.2.0",
     "@ionic/storage-angular": "4.0.0",
     "@maplibre/ngx-maplibre-gl": "17.4.1",
     "@ngx-translate/core": "15.0.0",