[exporterhelper] Introduce batching functionality #18217

Job	Run time
govulncheck	34s
setup-environment	20s
checks	1m 51s
lint	3m 23s
cross-build-collector (darwin, amd64)	40s
cross-build-collector (darwin, arm64)	42s
test-coverage	3m 16s
cross-build-collector (linux, 386)	40s
unittest-matrix (~1.22)	1m 56s
cross-build-collector (linux, amd64)	43s
unittest-matrix (~1.21.8)	1m 51s
cross-build-collector (linux, arm64)	42s
cross-build-collector (linux, ppc64le)	48s
cross-build-collector (linux, arm, 7)	40s
cross-build-collector (linux, s390x)	47s
cross-build-collector (windows, 386)	47s
cross-build-collector (windows, amd64)	48s
unittest	1s
	20m 29s

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