Add SKILL.md and enrich package docstring #327

Job	Run time
build / lint-toml	5s
build / lint-python	9s
build / generate-license	47s
build / lint-rust	17s
build / check-crates-patch	0s
build / ManyLinux arm64	6m 44s
build / macOS arm64 & Windows (3.10, windows-latest)	42s
build / macOS arm64 & Windows (3.10, macos-latest)	6m 48s
build / ManyLinux x86_64	6m 46s
build / build-macos-x86_64	0s
build / Source distribution	0s
build / Build docs	1s
build / Merge build artifacts	1s
test	0s
	22m 20s

Provide feedback