build

feat: add `fletcher32` codec #886

Job	Run time
clippy	55s
build_and_test_macos (macos-13)	2m 30s
build_and_test (stable, --features "")	2m 4s
build_and_test_macos (macos-latest)	2m 2s
build_and_test_windows	2m 27s
build_and_test (stable, --all-features)	2m 42s
codecov	2m 14s
build_and_test (stable, --no-default-features)	1m 51s
build_and_test (1.77, --features "")	2m 13s
minimal-versions	1m 12s
fmt	40s
build_and_test (1.77, --all-features)	2m 33s
semver	1m 42s
build_and_test (1.77, --no-default-features)	2m 5s
build_and_test (beta, --features "")	2m 12s
build_and_test (beta, --all-features)	2m 31s
build_and_test (beta, --no-default-features)	1m 50s
build_and_test (nightly, --features "")	1m 36s
build_and_test (nightly, --all-features)	1m 54s
build_and_test (nightly, --no-default-features)	1m 18s
	38m 31s

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