Reapply "整理项目结构，优化配置项"

This reverts commit 2f650dd880.

photo_mask.py

@@ -13,12 +13,11 @@ from paddlenlp.utils.doc_parser import DocParser
 from sqlalchemy import update
 
 from auto_email.error_email import send_error_email
-from config.log import LOGGING_CONFIG
-from config.mysql import MysqlSession
-from config.photo_review import PHHD_BATCH_SIZE, SLEEP_MINUTES
-from config.ucloud import BUCKET
-from models import ZxPhrec, ZxPhhd
-from ucloud import ucloud
+from db import MysqlSession
+from db.mysql import ZxPhrec, ZxPhhd
+from log import LOGGING_CONFIG
+from photo_review import PHHD_BATCH_SIZE, SLEEP_MINUTES
+from ucloud import BUCKET, ucloud
 
 DOC_PARSER = DocParser(use_gpu=True, device_id=1)