feat(patch_set): `PatchSet::parse_bytes` for raw byte input #207

Job	Run time
semver	11s
test (1.75.0)	29s
lint	15s
test (nightly)	24s
test (beta)	26s
test (stable)	27s
replay (llvm/llvm-project) / gitdiff	55s
replay (llvm/llvm-project) / unidiff	51s
replay (git/git) / unidiff	36s
replay (git/git) / gitdiff	37s
replay (golang/go) / unidiff	26s
replay (golang/go) / gitdiff	24s
replay (diffy) / unidiff	17s
replay (diffy) / gitdiff	22s
replay (rust-lang/rust) / gitdiff	31s
replay (rust-lang/rust) / unidiff	31s
replay (torvalds/linux) / unidiff	36s
replay (torvalds/linux) / gitdiff	35s
	8m 53s

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