Decide how to handle REUSE information

The artifacts in the repository are fine, but especially the "generated" output should somehow carry Copyright information.

There are some approaches that we already discussed:

• Keep the annotations from the source files in the generated output.
  • Pro: All information is readily available.
  • Contra: The generated output (i.e., the pad) is very cluttered with countless SPDX tags.
• Keep the annotation from the pad.md template.
  • Pro: Easy option, does not require any manual interaction or additional scripting.
  • Contra: Either we have two different license headers (i.e., one for the pad.md template and one for the generated pad) or the information in the generated pad might be inconsistent (i.e., contributors to the pad.md might be different to those that contributed to the full generated pad - all contributors from all episodes).
• Add a separate header to the generated pad.
  • Pro: Reproduces the correct copyright information
  • Contra: Additional manual work or scripting required.