feat: add support for OS specific keychains #7329

Job	Run time
build-and-test (msrv, ubuntu-latest-16-cores, x86_64-unknown-linux-gnu)	5m 46s
build-and-test (msrv, ubuntu-jammy-16-cores-arm64, aarch64-unknown-linux-gnu)	7m 23s
build-and-test (msrv, macos-latest, x86_64-apple-darwin)	13m 20s
cargo-deny (advisories)	46s
build-and-test (msrv, macos-latest, aarch64-apple-darwin)	10m 2s
cargo-deny (bans)	47s
check-generated-full-help-docs	4m 42s
build-and-test (msrv, windows-latest-8-cores, x86_64-pc-windows-msvc)	12m 28s
cargo-deny (licenses)	44s
fmt	35s
build-and-test (latest, ubuntu-latest-16-cores, x86_64-unknown-linux-gnu)	5m 31s
cargo-deny (sources)	42s
publish-dry-run	0s
build-and-test (latest, ubuntu-jammy-16-cores-arm64, aarch64-unknown-linux-gnu)	7m 1s
build-and-test (latest, macos-latest, x86_64-apple-darwin)	12m 9s
build-and-test (latest, macos-latest, aarch64-apple-darwin)	10m 10s
build-and-test (latest, windows-latest-8-cores, x86_64-pc-windows-msvc)	11m 1s
complete	1s
	1h 43m 8s

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