Layout is remembered for Schematic/Symbol Editors and Footprint Chooser frames until KiCad restarts
Also Added a new button toggle to show/hide the description panel with some new images too
Fixes: https://gitlab.com/kicad/code/kicad/-/issues/17610
When the user is navigating a drop down menu, they don't want the
preview window to pop over their screen. This glues between the
LIB_TREE and the frame to block these preview events
Fixes https://gitlab.com/kicad/code/kicad/-/issues/19117
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
Create 2 wrappers for it: DIALOG_FOOTPRINT_CHOOSER and
FOOTPRINT_CHOOSER_FRAME. The first now gets called from wxGrid
editors, text button editors (such as Change Footprints), etc.
Retire FOOTPRINT_VIEWER_FRAME_MODAL. FOOTPRINT_VIEWER_FRAME still
exists, but has very few uses at this point.