Add some basic gadgets to VK regression #3566

Job	Run time
Build-And-Test-Web	4m 46s
Build-And-Test-Server (Simple integration tests)	17m 25s
Build-And-Test-Server (DEX integration tests)	13m 27s
Build-And-Test-Server (DEX integration test with proofs)	14m 17s
Build-And-Test-Server (Voting integration tests)	5m 36s
Build-And-Test-Server (Unit tests)	35m 24s
Build-And-Test-Server (Verification Key Regression Check)	11m 39s
Build-And-Test-Server (CommonJS test)	3m 5s
Release-mina-signer-on-NPM	2m 10s
Release-on-NPM	1m 57s
	1h 49m 46s

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