WIP: License and Documentation Improvements

This makes two modifications that are somewhat distinct.

[1] I have included a new script and CI job that will automatically check the repository for appropriate Copyrighting of all files.

[2] I have removed the automated doxygen building from the CI as that will be done automatically in the top level faser/daq repo as discussed here - https://gitlab.cern.ch/faser/daq/-/merge_requests/77