feat 新增接口描述 docs页面 ，新增S3 图片get upload 操作，整理代码

fix

app/service/design/items/shoes.py

@@ -1,14 +1,9 @@
-import io
-import logging
-import time
-
 import cv2
 import numpy as np
+from PIL import Image
 
 from .builder import ITEMS
 from .clothing import Clothing
-from PIL import Image
-
 from ..utils.conversion_image import rgb_to_rgba
 from ..utils.upload_image import upload_png_mask
 from ...utils.generate_uuid import generate_uuid