feat: add node scheduling control #306

Job	Run time
ci-lint	18s
build-mainnet	4m 25s
build-debug	4m 16s
build-calibnet	4m 10s
build-2k	4m 17s
build-forest	4m 25s
gen-check	9m 4s
gofmt	31s
lint	3m 24s
mod-tidy-check	36s
setup-params	5s
test (test-itest-curio, ./itests/curio_test.go)	4m 56s
test (test-all, `go list ./... \| grep -v curio/itests`)	3m 9s
test (test-itest-harmonyDB, ./itests/harmonydb_test.go)	3m 2s
test (test-itest-alertnow, ./itests/alertnow_test.go)	1m 50s
	48m 28s

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