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/test_db_user.py

@@ -3,9 +3,9 @@ import pytest
 @pytest.mark.asyncio
 async def test_user_curd():
     """测试数据库的增删改查"""
-    from models import database, migration
-    from models.group import Group
-    from models.user import User
+    from sqlmodels import database, migration
+    from sqlmodels.group import Group
+    from sqlmodels.user import User
 
     await database.init_db(url='sqlite+aiosqlite:///:memory:')
 
@@ -17,7 +17,7 @@ async def test_user_curd():
         created_group = await test_user_group.save(session)
 
         test_user = User(
-            username='test_user',
+            email='test_user@test.local',
             password='test_password',
             group_id=created_group.id
         )
@@ -27,7 +27,7 @@ async def test_user_curd():
 
         # 验证用户是否存在
         assert created_user.id is not None
-        assert created_user.username == 'test_user'
+        assert created_user.email == 'test_user@test.local'
         assert created_user.password == 'test_password'
         assert created_user.group_id == created_group.id
 
@@ -35,18 +35,18 @@ async def test_user_curd():
         fetched_user = await User.get(session, User.id == created_user.id)
 
         assert fetched_user is not None
-        assert fetched_user.username == 'test_user'
+        assert fetched_user.email == 'test_user@test.local'
         assert fetched_user.password == 'test_password'
         assert fetched_user.group_id == created_group.id
 
         # 测试改 Update
         updated_user = await fetched_user.update(
             session,
-            {"username": "updated_user", "password": "updated_password"}
+            {"email": "updated_user@test.local", "password": "updated_password"}
         )
 
         assert updated_user is not None
-        assert updated_user.username == 'updated_user'
+        assert updated_user.email == 'updated_user@test.local'
         assert updated_user.password == 'updated_password'
 
         # 测试删除 Delete