What does this implement/fix? Explain your changes.

This enables Source Link and symbol package generation during build.

Source Link automatically pulls library (e.g. Python.NET) source code from GitHub when debugging.

Checklist

Check all those that are applicable and complete.

• Make sure to include one or more tests for your change
• If an enhancement PR, please create docs and at best an example
• Add yourself to AUTHORS
• Updated the CHANGELOG