commit: Add `commit.is_hidden(repo)` #45

Job	Run time
check (protos)	33s
nix flake (ubuntu-24.04)	6m 55s
check (clippy)	2m 45s
check (cargo-deny, advisories)	25s
check (codespell)	12s
check (cargo-deny, bans)	22s
check (cargo-deny, licenses)	27s
check (doctests)	2m 41s
nix flake (ubuntu-24.04-arm)	5m 0s
check (cargo-deny, sources)	26s
check (mkdocs)	9s
nix flake (macos-14)	8m 30s
check (rustfmt)	17s
build (no git)	1m 14s
test (linux-x86_64-gnu)	7m 7s
test (linux-aarch64-gnu)	5m 27s
check (latest mkdocs, optional)	11s
test (macos-x86_64)	11m 39s
test (macos-aarch64)	6m 35s
test (windows-x86_64)	14m 47s
	1h 15m 42s

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