- Added configuration for enabling cross-tenant access in the application.
- Introduced new API endpoints for listing and searching tenants, accessible only to users with the appropriate permissions.
- Updated user and tenant models to include the `can_access_all_tenants` field.
- Enhanced the authentication middleware to handle cross-tenant requests and validate user permissions.
- Created a new TenantSelector component for selecting tenants in the frontend, improving user experience.
- Updated internationalization files to support new tenant-related strings and messages.
wizardchen