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/javascript/packs/superadmin.js

@@ -1,2 +1 @@
-import '../dashboard/assets/scss/app.scss';
 import '../dashboard/assets/scss/super_admin/index.scss';

app/javascript/packs/superadmin_pages.js

@@ -1,2 +1 @@
-import '../dashboard/assets/scss/super_admin/pages.scss';
 import 'chart.js';