[MOD-8198] Introduce INT8 distance functions #650

Job	Run time
spellcheck	7s
check-if-docs-only / check-only-docs-changed	8s
codeql-analysis / Analyze (cpp)	9m 11s
codeql-analysis / Analyze (python)	1m 11s
basic tests	1m 2s
coverage	0s
pr-validation	1s
	11m 40s

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