Extend systest with option to add split node setup #21892

Job	Run time
filter-changes	7s
coverage	16m 47s
lint	2m 31s
quicktests	1m 55s
build (ubuntu-22.04)	59s
build (ubuntu-latest-arm-8-cores)	2m 59s
unittests (ubuntu-22.04)	26m 39s
build (macos-13)	1m 20s
unittests (ubuntu-latest-arm-8-cores)	33m 4s
build (self-hosted, macOS, ARM64, go-spacemesh)	29s
unittests (self-hosted, macOS, ARM64, go-spacemesh)	21m 10s
build (windows-2022)	5m 58s
unittests (windows-2022)	36m 35s
ci-status	12s
	2h 30m 45s

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