[VOL-5291] - Add tox debugging for gerrit:35128

Makefile
--------
  o Invoke tox -vvv to run at verbosity level (4=DEBUG).

setup.py
requirements.txt
----------------
  o Add a proper copyright notice for lint license checking.

tox.ini
-------
  o Added a see-also section with documentation urls.

.pre-commit-config.yaml
-----------------------
  o Add pre-commit tool config file.
  o Cleanup some minor linting complaints.

Change-Id: I60c6ba1e68f3f45502fe1629642b3afbc54737a0
diff --git a/setup.py b/setup.py
index 8f9f1ff..9080dbd 100755
--- a/setup.py
+++ b/setup.py
@@ -1,4 +1,6 @@
-# Copyright 2019-2024 Open Networking Foundation (ONF) and the ONF Contributors
+# -*- coding: utf-8 -*-
+# -----------------------------------------------------------------------
+# Copyright 2019-2024 Open Networking Foundation Contributors
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -11,6 +13,10 @@
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
+# -----------------------------------------------------------------------
+# SPDX-FileCopyrightText: 2019-2024 Open Networking Foundation Contributors
+# SPDX-License-Identifier: Apache-2.0
+# -----------------------------------------------------------------------
 
 from setuptools import setup, find_packages