zarrs_filesystem: prepare 0.2.0 release #808

Job	Run time
build_and_test_windows	5m 56s
clippy	1m 0s
build_and_test_macos (macos-13)	3m 42s
build_and_test (stable, --features "")	2m 20s
build_and_test_macos (macos-latest)	2m 1s
build_and_test (stable, --all-features)	2m 37s
codecov	1m 35s
build_and_test (stable, --no-default-features)	1m 36s
fmt	20s
build_and_test (1.77, --features "")	2m 8s
minimal-versions	45s
build_and_test (1.77, --all-features)	2m 49s
semver	4m 4s
build_and_test (1.77, --no-default-features)	2m 18s
build_and_test (beta, --features "")	2m 17s
build_and_test (beta, --all-features)	2m 35s
build_and_test (beta, --no-default-features)	1m 34s
build_and_test (nightly, --features "")	1m 15s
build_and_test (nightly, --all-features)	1m 43s
build_and_test (nightly, --no-default-features)	49s
	43m 24s

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