feat(EAV-423): add actions to start and stop External in vMix #1488

Job	Run time
Test (14.x, timeline-state-resolver)	2m 14s
Check docs generation	1m 49s
Lint (timeline-state-resolver)	1m 52s
Lint (timeline-state-resolver-types)	1m 37s
Lint (quick-tsr)	1m 40s
Test (14.x, timeline-state-resolver-types)	1m 41s
Validate all dependencies (timeline-state-resolver)	1m 3s
Test (16.x, timeline-state-resolver)	2m 16s
Validate all dependencies (timeline-state-resolver-types)	1m 3s
Test (16.x, timeline-state-resolver-types)	1m 46s
Validate production dependencies (timeline-state-resolver)	1m 0s
Test (18.x, timeline-state-resolver)	2m 3s
Validate production dependencies (timeline-state-resolver-types)	58s
Test (18.x, timeline-state-resolver-types)	1m 36s
Test (20.x, timeline-state-resolver)	1m 57s
Test (20.x, timeline-state-resolver-types)	1m 38s
Release	0s
	26m 13s

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