feat(api): Introduce BuildExecutor for multiple runner kinds #4332

Job	Run time
unit	4m 32s
test-docker-build (waiter)	47s
test-docker-build (git)	1m 8s
test-docker-build (image-processing)	1m 4s
test-docker-build (base)	49s
e2e (v1.33.0, v1.0.0)	25m 44s
integration (v1.33.0, v1.0.0)	21m 48s
e2e (v1.30.10, v0.62.9)	27m 21s
integration (v1.30.10, v0.62.9)	21m 46s
	1h 44m 59s

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