Refactor log utils (#10973)

### What problem does this PR solve?

As title.

### Type of change

- [x] Refactoring

---------

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

rag/llm/embedding_model.py

@@ -27,7 +27,7 @@ from ollama import Client
 from openai import OpenAI
 from zhipuai import ZhipuAI
 
-from api.utils.log_utils import log_exception
+from common.log_utils import log_exception
 from common.token_utils import num_tokens_from_string, truncate
 from api import settings
 import logging

rag/llm/rerank_model.py

@@ -22,7 +22,7 @@ import numpy as np
 import requests
 from yarl import URL
 
-from api.utils.log_utils import log_exception
+from common.log_utils import log_exception
 from common.token_utils import num_tokens_from_string, truncate, total_token_count_from_response
 
 class Base(ABC):

rag/svr/task_executor.py

@@ -28,7 +28,7 @@ from api.db.services.knowledgebase_service import KnowledgebaseService
 from api.db.services.pipeline_operation_log_service import PipelineOperationLogService
 from api.utils.api_utils import timeout
 from common.base64_image import image2id
-from api.utils.log_utils import init_root_logger
+from common.log_utils import init_root_logger
 from common.file_utils import get_project_base_directory
 from common.config_utils import show_configs
 from graphrag.general.index import run_graphrag_for_kb