Add luminance flag (determines whether theme is light or dark)#81

Draft

tbethe wants to merge 4 commits intoMisterio77:masterfrom tbethe:master

+100-13

Commits on Jun 11, 2023

Add scaffolding to add luminosity option.
Timme Bethe
committed
Added luminance calculation
Timme Bethe
committed

Commits on Jun 13, 2023

Added missing documentation
Timme Bethe
committed
Rename theme to scheme
Timme Bethe
committed