Feature: Add option to skip collecting latency histogram metric

[Nklya]

It fixes: #784 via 3rd option you mentioned here #784 (comment)

Accidentally closed previous PR #911 due to mess-up with force pushes.
Tested it locally, works as expected.
Can check adding tests later on weekend if needed.

[coveralls]

Pull Request Test Coverage Report for Build 357

Details

• 3 of 80 (3.75%) changed or added relevant lines in 2 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.07%) to 84.107%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
main.go	0	77	0.0%

Totals
Change from base Build 355:	-0.07%
Covered Lines:	1974
Relevant Lines:	2347

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💛 - Coveralls

[oliver006]

Thanks for the PR, looks good. You can add the test in a follow-up PR if you like, not urgent. Let me merge this and release a new version

[Nklya]

Thank you 🙂