ZBytes::iter_raw. Improve ZBytes documentation #8088

Job	Run time
Typos Check	5s
Lints and doc tests on ubuntu-latest	8m 4s
Lints and doc tests on windows-latest	10m 4s
Unit tests on ubuntu-latest	21m 19s
Lints and doc tests on macos-13	9m 5s
Lints and doc tests on macos-14	7m 14s
Unit tests on windows-latest	33m 23s
Unit tests on macos-13	11m 40s
Unit tests on macos-14	9m 39s
Memory leak checks	2m 2s
CI status checks	1s
	1h 52m 36s

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