Refactor import statements for ResponseBase in API routers

- Updated import statements in the following files to import ResponseBase directly from models instead of models.response:
  - routers/api/v1/share/__init__.py
  - routers/api/v1/site/__init__.py
  - routers/api/v1/slave/__init__.py
  - routers/api/v1/tag/__init__.py
  - routers/api/v1/user/__init__.py
  - routers/api/v1/vas/__init__.py
  - routers/api/v1/webdav/__init__.py

Enhance user registration and related endpoints in user router

- Changed return type annotations from models.response.ResponseBase to models.ResponseBase in multiple functions.
- Updated return statements to reflect the new import structure.
- Improved documentation for clarity.

Add PhysicalFile model and storage service implementation

- Introduced PhysicalFile model to represent actual files on disk with reference counting logic.
- Created storage service module with local storage implementation, including file operations and error handling.
- Defined exceptions for storage operations to improve error handling.
- Implemented naming rule parser for generating file and directory names based on templates.

Update dependency management in uv.lock

- Added aiofiles version 25.1.0 to the project dependencies.

service/storage/__init__.py

@@ -0,0 +1,20 @@
+"""
+存储服务模块
+
+提供文件存储相关的服务，包括：
+- 本地存储服务
+- 命名规则解析器
+- 存储异常定义
+"""
+from .exceptions import (
+    DirectoryCreationError,
+    FileReadError,
+    FileWriteError,
+    InvalidPathError,
+    StorageException,
+    StorageFileNotFoundError,
+    UploadSessionExpiredError,
+    UploadSessionNotFoundError,
+)
+from .local_storage import LocalStorageService
+from .naming_rule import NamingContext, NamingRuleParser