Add source and license comments to setup.cfg

Added comments regarding the source and license information for the requirements file.

Author: devdev-automation

setup.cfg

@@ -9,3 +9,10 @@ statistics = True
 
 [metadata]
 description-file = README.md
+
+# Source - https://stackoverflow.com/questions/49689880/proper-way-to-parse-requirements-file-after-pip-upgrade-to-pip-10-x-x
+# Posted by sinoroc, modified by community. See post 'Timeline' for change history
+# Retrieved 2026-01-23, License - CC BY-SA 4.0
+
+[options]
+install_requires = file: requirements.txt