feat: add Cronos zkEVM chain support (#2628)

Add cronoszkEVM chain

.changeset/nasty-cherries-explode.md

@@ -0,0 +1,5 @@
+---
+"viem": patch
+---
+
+Added cronoszkEVM chain.

src/chains/definitions/cronoszkEVM.ts

@@ -0,0 +1,20 @@
+import { defineChain } from '../../utils/chain/defineChain.js'
+
+export const cronoszkEVM = /*#__PURE__*/ defineChain({
+  id: 388,
+  name: 'Cronos zkEVM Mainnet',
+  nativeCurrency: {
+    decimals: 18,
+    name: 'Cronos zkEVM CRO',
+    symbol: 'zkCRO',
+  },
+  rpcUrls: {
+    default: { http: ['https://mainnet.zkevm.cronos.org'] },
+  },
+  blockExplorers: {
+    default: {
+      name: 'Cronos zkEVM (Mainnet) Chain Explorer',
+      url: 'https://explorer.zkevm.cronos.org',
+    },
+  },
+})

src/chains/index.ts

@@ -67,6 +67,7 @@ export { confluxESpaceTestnet } from './definitions/confluxESpaceTestnet.js'
 export { coreDao } from './definitions/coreDao.js'
 export { crab } from './definitions/crab.js'
 export { cronos } from './definitions/cronos.js'
+export { cronoszkEVM } from './definitions/cronoszkEVM.js'
 export { cronoszkEVMTestnet } from './definitions/cronoszkEVMTestnet.js'
 export { cronosTestnet } from './definitions/cronosTestnet.js'
 export { crossbell } from './definitions/crossbell.js'