feat: add zksync as supported network

Author: nikola-bozin-txfusion

packages/hardhat-network-helpers/src/utils.ts

@@ -19,6 +19,7 @@ async function checkIfDevelopmentNetwork(
 
       cachedIsDevelopmentNetwork =
         version.toLowerCase().startsWith("hardhatnetwork") ||
+        version.toLowerCase().startsWith("zksync") ||
         version.toLowerCase().startsWith("anvil");
     } catch (e) {
       cachedIsDevelopmentNetwork = false;