Add attestation with sbom #28

Job	Run time
build (stable, x86_64-unknown-linux-gnu, time)	48s
nixbuild	1m 18s
build (stable, x86_64-unknown-linux-gnu, timer)	54s
build (stable, x86_64-unknown-linux-gnu, counter)	1m 7s
build (stable, x86_64-pc-windows-msvc, time)	55s
build (stable, x86_64-pc-windows-msvc, timer)	50s
build (stable, x86_64-pc-windows-msvc, counter)	57s
build (stable, i686-pc-windows-msvc, time)	53s
build (stable, i686-pc-windows-msvc, timer)	54s
build (stable, i686-pc-windows-msvc, counter)	56s
build (stable, x86_64-apple-darwin, time)	8s
build (stable, x86_64-apple-darwin, timer)	47s
build (stable, x86_64-apple-darwin, counter)	1m 9s
build (stable, aarch64-apple-darwin, time)	39s
build (stable, aarch64-apple-darwin, timer)	37s
build (stable, aarch64-apple-darwin, counter)	1m 14s
create-release	1s
	14m 7s

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