feat: Implement API routers for user, tag, vas, webdav, and slave functionalities

- Added user authentication and registration endpoints with JWT support.
- Created tag management routes for creating and deleting tags.
- Implemented value-added service (VAS) endpoints for managing storage packs and orders.
- Developed WebDAV account management routes for creating, updating, and deleting accounts.
- Introduced slave router for handling file uploads, downloads, and aria2 task management.
- Enhanced JWT utility functions for token creation and secret key management.
- Established lifespan management for FastAPI application startup and shutdown processes.
- Integrated password handling utilities with Argon2 hashing and two-factor authentication support.

utils/lifespan/lifespan.py

@@ -0,0 +1,39 @@
+from fastapi import FastAPI
+from contextlib import asynccontextmanager
+
+__on_startup: list[callable] = []
+__on_shutdown: list[callable] = []
+
+def add_startup(func: callable):
+    """
+    注册一个函数，在应用启动时调用。
+    
+    :param func: 需要注册的函数。它应该是一个异步函数。
+    """
+    __on_startup.append(func)
+
+def add_shutdown(func: callable):
+    """
+    注册一个函数，在应用关闭时调用。
+    
+    :param func: 需要注册的函数。
+    """
+    __on_shutdown.append(func)
+
+@asynccontextmanager
+async def lifespan(app: FastAPI):
+    """
+    应用程序的生命周期管理器。
+    
+    此函数在应用启动时执行所有注册的启动函数，
+    并在应用关闭时执行所有注册的关闭函数。
+    """
+    # Execute all startup functions
+    for func in __on_startup:
+        await func()
+    
+    yield
+    
+    # Execute all shutdown functions
+    for func in __on_shutdown:
+        await func()