Implement `Clone` for `CompressError` and `DecompressError` #406

Job	Run time
WebAssembly (wasm32-unknown-unknown)	10s
Rustfmt & Docs	21s
WebAssembly (wasm32-wasip1)	7s
Minimum Rust compiler (windows-2022)	1m 58s
Test (stable)	21s
Minimum Rust compiler	1m 45s
Minimum Rust compiler (macos-latest)	2m 2s
Test (beta)	25s
Minimum Rust compiler (ubuntu-latest)	1m 55s
Test (nightly)	23s
Test (macos)	25s
Test (windows)	21s
Test (mingw)	24s
	10m 37s

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