Add `OrientModifier::rotation` #495

Job	Run time
Check format	40s
run-examples	10m 39s
Coverage	4m 25s
build (2d, stable, windows-latest)	4m 49s
build (2d, stable, ubuntu-latest)	10m 2s
build (2d, stable, macos-latest)	2m 17s
build (3d, stable, windows-latest)	6m 13s
build (3d, stable, ubuntu-latest)	10m 7s
build (3d, stable, macos-latest)	2m 22s
build (all, stable, windows-latest)	5m 43s
build (all, stable, ubuntu-latest)	8m 11s
build (all, stable, macos-latest)	3m 20s
	1h 8m 48s

Provide feedback