fuzz with corpus + coverage

[folkertdev]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Flag	Coverage Δ
fuzz-compress	51.64% <ø> (?)
fuzz-decompress	23.22% <ø> (?)
test-aarch64-apple-darwin	90.04% <ø> (ø)
test-x86_64-apple-darwin	90.04% <ø> (ø)
test-x86_64-unknown-linux-gnu	90.04% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
fuzz/fuzz_targets/decompress.rs	94.73% <ø> (ø)

... and 1 file with indirect coverage changes

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