Build

treewide: add `stylix.enable` option #737

Job	Run time
List packages	22s
docs on x86_64-darwin	1m 2s
palette-generator on x86_64-darwin	3m 51s
docs on x86_64-linux	25s
palette-generator on x86_64-linux	26s
testbed-gnome-dark on x86_64-linux	28s
testbed-gnome-light on x86_64-linux	29s
testbed-kde-dark on x86_64-linux	35s
testbed-kde-light on x86_64-linux	26s
	8m 4s

Provide feedback