sloproxy

feat(api): implement support for multi-auth expansion in plugin systems master

- Added logic to expand single auth JSON payloads into multiple plugin virtual auth records. - Updated related API endpoints such as `PatchAuthFileStatus` and `DeleteAuthFile` to handle plugin virtual auths with rollback mechanisms. - Introduced `NormalizePluginOAuthCallbackProvider` and other normalization functions for better handling of OAuth callbacks. - Enhanced tests to validate multi-auth parsing, rollback behavior, and API response consistency.