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
ADDED: Option to assign unique reference designators to footprints
created with the array tool [pcbnew]
CHANGED: Array creator dialog no longer displays pad numbering properties
when in the board editor. [pcbnew]
Fixes https://gitlab.com/kicad/code/kicad/-/issues/2354
The CONFIG_SAVE_RESTORE_WINDOW class does not need to be tied
to the array dialog, put it in common/widgets.
Also do a refactor and tidy-up of the the class, use a union for (slightly)
better type-safety and syntax (a variant would be better but that's C++17).
Also enable integral field save/restore from text boxes.
