[WIP] Add cetl::variant #221

Job	Run time
docs	2m 33s
verification (Debug, exceptions, 14, gcc)	2m 44s
verification (Debug, exceptions, 14, clang)	2m 45s
verification (Debug, exceptions, 17, gcc)	2m 45s
verification (Debug, exceptions, 17, clang)	2m 43s
verification (Debug, exceptions, 20, gcc)	2m 45s
verification (Debug, exceptions, 20, clang)	2m 45s
verification (Debug, no-exceptions, 14, clang)	2m 41s
verification (Debug, no-exceptions, 17, gcc)	2m 47s
verification (Debug, no-exceptions, 17, clang)	2m 45s
verification (Debug, no-exceptions, 20, gcc)	2m 45s
verification (Debug, no-exceptions, 20, clang)	2m 39s
verification (Release, exceptions, 14, gcc)	2m 43s
verification (Release, exceptions, 14, clang)	2m 46s
verification (Release, exceptions, 17, gcc)	2m 44s
verification (Release, exceptions, 17, clang)	2m 44s
verification (Release, exceptions, 20, gcc)	2m 44s
verification (Release, exceptions, 20, clang)	2m 51s
verification (Release, no-exceptions, 14, gcc)	1s
verification (Release, no-exceptions, 14, clang)	2m 45s
verification (Release, no-exceptions, 17, gcc)	1s
verification (Release, no-exceptions, 17, clang)	1s
verification (Release, no-exceptions, 20, gcc)	1s
verification (Release, no-exceptions, 20, clang)	1s
verification (Coverage, no-exceptions, 14, gcc)	2m 47s
sonarqube	0s
deploy-docs	0s
	54m 46s

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