RFC: Experimental profiling #20488

Job	Run time
govulncheck	39s
setup-environment	11s
checks	1m 55s
test-coverage	5m 24s
lint	3m 40s
cross-build-collector (darwin, amd64)	49s
unittest-matrix (ubuntu-latest, ~1.22)	2m 12s
cross-build-collector (darwin, arm64)	54s
unittest-matrix (ubuntu-latest, ~1.21.11)	2m 47s
cross-build-collector (linux, 386)	44s
cross-build-collector (linux, amd64)	54s
cross-build-collector (linux, arm64)	49s
cross-build-collector (linux, ppc64le)	38s
cross-build-collector (linux, arm, 7)	56s
cross-build-collector (linux, s390x)	40s
cross-build-collector (windows, 386)	43s
cross-build-collector (windows, amd64)	46s
unittest	1s
	24m 42s

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