feat: add CNB login functionality and user management

- Introduced `cnb-login` route to handle user login via CNB token.
- Created `CnbServices` class for managing CNB user interactions.
- Added `findByCnbId` method in the User model to retrieve users by CNB ID.
- Updated error handling to provide more structured error messages.
- Enhanced user creation logic to handle CNB users.
- Added tests for the new CNB login functionality.

src/routes/user/index.ts

@@ -16,3 +16,5 @@ import './admin/user.ts';
 import './secret-key/list.ts';
 
 import './wx-login.ts'
+
+import './cnb-login.ts';