feat: I: proxy signals to subordinate processes ... #7588

Job	Run time
docs	18s
gomod	54s
image_tags	1s
reno_lint	35s
test (test)	11m 18s
lint	4m 5s
test (integration-test)	8m 19s
build (controller)	2m 37s
test (helm-test)	3m 28s
build (kanctl)	2m 32s
build (kando)	2m 21s
release	0s
release_example_docker_images	0s
	36m 28s

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