feat: Super admin design improvements (#8517)

- Revamp the super admin design
- Introduce a new settings page for support and billing settings
- Move the access tokens into users, agent bots and platform app show pages


Co-authored-by: Sojan <sojan@pepalo.com>
Co-authored-by: Pranav Raj S <pranav@chatwoot.com>

app/assets/stylesheets/administrate/application.scss

@@ -25,7 +25,6 @@
 @import 'components/flashes';
 @import 'components/form-actions';
 @import 'components/main-content';
-@import 'components/navigation';
 @import 'components/pagination';
 @import 'components/search';
 @import 'components/reports';