Move some functions out of 'api/utils/common.py' (#10948)

### What problem does this PR solve?

as title.

### Type of change

- [x] Refactoring

Signed-off-by: Jin Hai <haijin.chn@gmail.com>

rag/settings.py

@@ -17,7 +17,7 @@ import os
 import logging
 from api.utils.configs import get_base_config, decrypt_database_config
 from common.file_utils import get_project_base_directory
-from api.utils.common import pip_install_torch
+from common.misc_utils import pip_install_torch
 
 # Server
 RAG_CONF_PATH = os.path.join(get_project_base_directory(), "conf")