[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/requirements.txt b/requirements.txt
index 98f43ad..5b4308d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,5 +1,26 @@
-grpcio==1.39.0
-protobuf==3.17.3
-grpcio-tools==1.39.0
+# -----------------------------------------------------------------------
+# Copyright 2023-2024 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.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# 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: 2023-2024 Open Networking Foundation Contributors
+# SPDX-License-Identifier: Apache-2.0
+# -----------------------------------------------------------------------
+
 googleapis-common-protos==1.52.0
+grpcio==1.39.0
+grpcio-tools==1.39.0
 nose2[coverage_plugin]
+protobuf==3.17.3
+
+# [EOF]