Implement worker fork #4352

Job	Run time
build-and-test	18m 3s
wasm-rpc-stub	50s
worker-tests-group1	6m 47s
cli-tests	16m 28s
docker-targets-build (${{ matrix.platform.platform }})	0s
integration-tests	23m 30s
Publish binaries of ${{ matrix.project }}	0s
sharding-tests	12m 42s
docker-publish	0s
worker-tests-group2	3m 36s
worker-tests-group3	4m 37s
worker-tests-group4	6m 56s
worker-tests-group5	8m 55s
worker-tests-group6	17m 50s
worker-tests-group7	6m 32s
worker-tests-group8	12m 57s
publish	0s
publish-slack-notification	0s
	2h 19m 43s

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