Add the settings dir(Specifies the primary text direction for the name, short_name, and description) and the lang(Specifies the primary language for the values in the name and short_name) to manifest.json options

pwa/app_settings.py

@@ -20,5 +20,7 @@ PWA_APP_ICONS = getattr(settings, 'PWA_APP_ICONS', [
         'sizes': '160x160'
     }
 ])
+PWA_APP_DIR = getattr(settings, 'PWA_APP_DIR', 'auto')
+PWA_APP_LANG = getattr(settings, 'PWA_APP_LANG', 'en-US')