Feat sdiff initial with parser #602

Job	Run time
cargo check (ubuntu-latest)	11s
cargo test (ubuntu-latest)	37s
cargo test (macOS-latest)	1m 24s
cargo check (windows-latest)	39s
cargo fmt --all -- --check	14s
GNU test suite	2m 24s
cargo check (macOS-latest)	11s
cargo test (windows-latest)	4m 29s
cargo clippy -- -D warnings (ubuntu-latest)	34s
cargo clippy -- -D warnings (macOS-latest)	14s
Code Coverage (ubuntu-latest, unix)	1m 43s
Code Coverage (windows-latest, windows)	7m 7s
Code Coverage (macos-latest, macos)	3m 5s
cargo clippy -- -D warnings (windows-latest)	42s
	23m 34s

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