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
Moves the logic into the SCH_RENDER_SETTINGS, rather than
repeating it in EESCHEMA/SYMBOL_EDITOR_SETTINGS (they still
maintain their state there, but the painter looks at the
SCH_RENDER_SETTINGS).
Also turn them off for preview purposes.
This is a little more primitive than the pcbnew tool,
in the same way that the arc tool is also more primitive
(no interactive manager).
It works just about well enough to get the curves drawn,
but all these tools could do with some interactivity
in esschema and symbol editor.
Fixes: https://gitlab.com/kicad/code/kicad/-/issues/8828
Also fixes some plot bugs with arcs.
Also moves polygonization of arcs (when required) in plotting code
from 5 degrees to calculated based on ARC_HIGH_DEF.
Fixes https://gitlab.com/kicad/code/kicad/issues/5017
ADDED arc, circle and rectangle shapes for schematic. Shapes support
line styles and fill colors.
CHANGED sheet background color in Edit Text & Graphics Properties to
fill color (and it now affects shapes).
Pushed STROKE_PARAMS down into common and moved all shapes to using it
for stroke descriptions.
Some differences are due to difference between libraries being files
in symbol editor and directories in footprint editor, but this unifies
most of the rest.
It also dispenses with the save-to-library vs save-to-document distinction
in the GUI because it makes for too much variability in the GUI, was
implemented differently between the two editors, and isn't needed as much
anymore now that we have the highly visible infobar.
There was also an issue that the save-to-board icon occupies the same
location and has the same size/shape/colours as the Board Setup icon in
PCBNew.
Fixes https://gitlab.com/kicad/code/kicad/issues/7215
