refactor: The first refactored version for sdk release (#907)

Co-authored-by: chengfangyin2 <chengfangyin3@jd.com>

tests/unit_tests/test_plugins.py

@@ -2,9 +2,8 @@ import os
 
 import pytest
 
-from pilot.configs.config import Config
-from pilot.configs.model_config import PLUGINS_DIR
-from pilot.plugins import (
+from dbgpt._private.config import Config
+from dbgpt.plugins import (
     denylist_allowlist_check,
     inspect_zip_for_modules,
     scan_plugins,