add script deploy zksync

Author: Zohar97

.env.example

@@ -3,3 +3,10 @@ ETHERSCAN_API_KEY=
 BSCSCAN_API_KEY=
 PRIVATE_KEY=
 VERIFY_CODE_TIMEOUT="30000" # in miliseconds
+
+# Flag zkSync
+  0 = not using zkSync source path
+  1 = using mainnet
+  2 = using testnet
+ZK_FLAGS=2
+ADMIN_FACTORY=

.gitignore

@@ -1,6 +1,8 @@
 #Hardhat files
 cache
 artifacts
+cache-zk
+artifacts-zk
 node_modules
 build
 

README.md

@@ -50,4 +50,12 @@ Example: `npx hardhat deploy --tags KyberSwap --network rinkeby --gasprice 30000
 `--silent`: This flag remove hardhat-deploy log output (see log function and log options for hre.deployments)
 `--watch`: This flag make the task never ending, watching for file changes in the deploy scripts folder and the contract source folder. If any changes happen the contracts are recompiled and the deploy script are re-run. Combined with a proxy deployment (Proxies or Diamond) this allow to have HCR (Hot Contract Replacement).
 
----
+---
+
+### How to deploy on zkSync
+- Update `ZK_FLAGS` env to
+  `0` default, not using zkSync network
+  `1` if using mainnet
+  `2` if using testnet
+- `yarn hardhat compile --network zkSyncNetwork`
+- `yarn hardhat deployZkSync --network zkSyncNetwork`