feat 新增 生成sketch时对图片清理背景，剔除带有污点的结果图

app/service/generate_image/test.py

@@ -22,7 +22,7 @@ from PIL import Image
 import time
 from app.core.config import *
 from app.schemas.generate_image import GenerateImageModel
-from app.service.generate_image.utils.remove_background import remove_background
+from app.service.generate_image.utils.image_processing import remove_background
 from app.service.generate_image.utils.upload_sd_image import upload_png_sd
 from app.service.utils.decorator import RunTime
 from app.service.utils.generate_uuid import generate_uuid