feat(pay): 支付跳转功能

- 账号管理：补充订阅状态管理、TeamManager上传说明
 - 新增「支付升级」功能模块描述
 - 系统设置：补充 CPA配置和 TeamManager配置项

src/web/routes/__init__.py

@@ -8,6 +8,7 @@ from .accounts import router as accounts_router
 from .registration import router as registration_router
 from .settings import router as settings_router
 from .email_services import router as email_services_router
+from .payment import router as payment_router
 
 api_router = APIRouter()
 
@@ -16,3 +17,4 @@ api_router.include_router(accounts_router, prefix="/accounts", tags=["accounts"]
 api_router.include_router(registration_router, prefix="/registration", tags=["registration"])
 api_router.include_router(settings_router, prefix="/settings", tags=["settings"])
 api_router.include_router(email_services_router, prefix="/email-services", tags=["email-services"])
+api_router.include_router(payment_router, prefix="/payment", tags=["payment"])