feat: Add experimental plugin support #103

Job	Run time
test-contract-tests	2m 47s
test-platforms-and-versions (ubuntu-latest, 19)	2m 24s
test-packaging	3m 12s
test-platforms-and-versions (ubuntu-latest, 17)	2m 23s
test-platforms-and-versions (ubuntu-latest, 11)	2m 28s
test-platforms-and-versions (ubuntu-latest, 8)	2m 22s
	15m 36s

Provide feedback