Cross-chain governance full example

This is the full example for the zkSync "Cross-chain governance" tutorial.

It consists of two folders:

• deploy-governance which contains the hardhat project that is used to deploy the governance smart contract on Rinkeby.
• counter which contains the hardhat project for the Counter L2 smart contract. It also contains scripts that are used to display the value of the counter as well as to call the governance to update the counter from L1.