Implement worker fork #4290

Job	Run time
cli-tests	13m 9s
integration-tests	12m 29s
build-and-test	13m 4s
docker-targets-build (${{ matrix.platform.platform }})	0s
Publish binaries of ${{ matrix.project }}	0s
sharding-tests	12m 11s
wasm-rpc-stub	58s
worker-tests-group1	6m 6s
docker-publish	0s
worker-tests-group2	4m 4s
worker-tests-group3	4m 25s
worker-tests-group4	4m 42s
worker-tests-group5	4m 42s
worker-tests-group6	3m 59s
worker-tests-group7	3m 38s
worker-tests-group8	3m 36s
worker-tests-group9	3m 20s
publish	1s
publish-slack-notification	1s
	1h 30m 25s

Provide feedback