Recommendation is to avoid using the year nomenclature as this
information is already encoded in the git repo. Avoids needing to
repeatly update.
Also updates AUTHORS.txt from current repo with contributor names
This adds Reset() method to KIFACE to reload global libs stored in
global static vars.
Also refactors some lib reload code in various frames to have
common MAIL_RELOAD_LIB handler.
Fixes https://gitlab.com/kicad/code/kicad/-/issues/12500
