Add ByteString implementation #100

Job	Run time
Build (ubuntu-latest, stable)	17s
Build (ubuntu-latest, 1.36.0)	1m 22s
Format (ubuntu-latest, stable)	8s
Build (macos-latest, stable)	27s
Cargo Deny (ubuntu-latest, stable)	3m 16s
Clippy (ubuntu-latest, stable)	28s
Format (ubuntu-latest, nightly)	13s
Build (windows-latest, stable)	1m 22s
Clippy (ubuntu-latest, nightly)	16s
Build (windows-latest, 1.36.0)	1m 57s
Test (ubuntu-latest, stable)	35s
Build (macos-11, 1.36.0)	2m 35s
Test (ubuntu-latest, 1.56.0)	1m 38s
Test (macos-latest, stable)	42s
Test (windows-latest, stable)	1m 0s
Test (windows-latest, 1.56.0)	2m 17s
Test (macos-11, 1.56.0)	2m 52s
	21m 25s

Provide feedback