feat: add models for physical files, policies, and user management

- Implement PhysicalFile model to manage physical file references and reference counting.
- Create Policy model with associated options and group links for storage policies.
- Introduce Redeem and Report models for handling redeem codes and reports.
- Add Settings model for site configuration and user settings management.
- Develop Share model for sharing objects with unique codes and associated metadata.
- Implement SourceLink model for managing download links associated with objects.
- Create StoragePack model for managing user storage packages.
- Add Tag model for user-defined tags with manual and automatic types.
- Implement Task model for managing background tasks with status tracking.
- Develop User model with comprehensive user management features including authentication.
- Introduce UserAuthn model for managing WebAuthn credentials.
- Create WebDAV model for managing WebDAV accounts associated with users.

tests/check_imports.py

@@ -49,13 +49,13 @@ def main():
         ("itsdangerous", "签名工具"),
 
         # 项目模块
-        ("models", "数据库模型"),
-        ("models.user", "用户模型"),
-        ("models.group", "用户组模型"),
-        ("models.object", "对象模型"),
-        ("models.setting", "设置模型"),
-        ("models.policy", "策略模型"),
-        ("models.database", "数据库连接"),
+        ("sqlmodels", "数据库模型"),
+        ("sqlmodels.user", "用户模型"),
+        ("sqlmodels.group", "用户组模型"),
+        ("sqlmodels.object", "对象模型"),
+        ("sqlmodels.setting", "设置模型"),
+        ("sqlmodels.policy", "策略模型"),
+        ("sqlmodels.database", "数据库连接"),
         ("utils.password.pwd", "密码工具"),
         ("utils.JWT.JWT", "JWT 工具"),
         ("service.user.login", "登录服务"),