make a media api, encapsulate the original S3 bucket address

there are 3 parts, from back to head, url inside the bucket -> url of backend media api -> backend domain, only the last part is spliced by frontend, the other two parts are spliced with sqlalchemy

app/main.py

@@ -6,6 +6,7 @@ from strawberry.fastapi import GraphQLRouter
 from dotenv import load_dotenv
 
 from auth import router as auth_router
+from app.media.router import router as media_router
 
 from app.db import engine, SessionLocal
 from app.models import Base, User
@@ -44,6 +45,7 @@ graphql_router = GraphQLRouter(schema, context_getter=get_context)
 
 # 挂载路由
 app.include_router(auth_router)                         # 保留现有的 auth 路由供 Google OAuth 回调使用
+app.include_router(media_router)                        # 挂载媒体路由，提供头像代理访问等等
 app.include_router(graphql_router, prefix="/graphql")   # 挂载 GraphQL 终点，前端以后只需要请求 /graphql
 
 # 打印路由测试