chore: Add pylint for DB-GPT core lib (#1076)

.isort.cfg

@@ -0,0 +1,13 @@
+[settings]
+# This is to make isort compatible with Black. See
+# https://black.readthedocs.io/en/stable/the_black_code_style.html#how-black-wraps-lines.
+line_length=88
+profile=black
+multi_line_output=3
+include_trailing_comma=True
+use_parentheses=True
+float_to_top=True
+filter_files=True
+
+skip_glob=examples/notebook/*
+sections=FUTURE,STDLIB,THIRDPARTY,FIRSTPARTY,LOCALFOLDER,AFTERRAY