CLI: Add `--requireReference` option #993

Job	Run time
coverage	12m 33s
coverage	8m 27s
coverage	10m 32s
lint	1m 31s
lint	1m 31s
lint	1m 31s
tests (core)	1m 27s
tests (core)	1m 27s
tests (core)	1m 27s
tests (plugin-hardhat)	5m 54s
tests (plugin-hardhat)	5m 54s
tests (plugin-hardhat)	5m 54s
tests (plugin-truffle)	2m 23s
tests (plugin-truffle)	2m 23s
tests (plugin-truffle)	2m 23s
tests (plugin-defender-hardhat)	9m 17s
tests (plugin-defender-hardhat)	9m 17s
tests (plugin-defender-hardhat)	9m 17s
	1h 33m 8s

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