Add voluntary exit via validator manager #19322

Job	Run time
check-code	10m 9s
Check for 'skip-ci' label	1s
check-msrv	19s
lockbud	14m 23s
target-branch-check	1s
debug-tests-ubuntu	16m 35s
beacon-chain-tests	25m 15s
network-tests	26m 44s
op-pool-tests	23m 12s
release-tests-ubuntu	39m 24s
release-tests-windows	38m 50s
slasher-tests	3m 48s
basic-simulator-ubuntu	15m 34s
cargo-udeps	7m 33s
compile-with-beta-compiler	14m 34s
ef-tests-ubuntu	19m 39s
execution-engine-integration-ubuntu	18m 41s
state-transition-vectors-ubuntu	9m 38s
fallback-simulator-ubuntu	14m 47s
cli-check	14m 3s
test-suite-success	0s
	5h 13m 10s

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