Encapsulate ZBufSliceIterator in ZBytesSliceIterator #8146

Job	Run time
Lints and doc tests on ubuntu-latest	8m 14s
Lints and doc tests on windows-latest	11m 10s
Unit tests on ubuntu-latest	18m 51s
Lints and doc tests on macos-13	13m 41s
Unit tests on windows-latest	25m 33s
Lints and doc tests on macos-14	5m 23s
Unit tests on macos-13	13m 38s
Unit tests on macos-14	10m 45s
Typos Check	7s
Memory leak checks	2m 12s
CI status checks	1s
	1h 49m 35s

Provide feedback