feat: add cyber testnet (#2161)

* add cyber testnet

* Update cyberTestnet.ts

* Create few-impalas-tickle.md

---------

Co-authored-by: jxom <jakemoxey@gmail.com>

.changeset/few-impalas-tickle.md

@@ -0,0 +1,5 @@
+---
+"viem": patch
+---
+
+Added Cyber testnet.

src/chains/definitions/cyberTestnet.ts

@@ -0,0 +1,26 @@
+import { defineChain } from '../../utils/chain/defineChain.js'
+
+export const cyberTestnet = /*#__PURE__*/ defineChain({
+  id: 111_557_560,
+  name: 'Cyber Testnet',
+  nativeCurrency: { name: 'Ether', symbol: 'ETH', decimals: 18 },
+  rpcUrls: {
+    default: {
+      http: ['https://cyber-testnet.alt.technology'],
+    },
+  },
+  blockExplorers: {
+    default: {
+      name: 'Blockscout',
+      url: 'https://cyber-testnet-explorer.alt.technology',
+      apiUrl: 'https://cyber-testnet-explorer.alt.technology/api',
+    },
+  },
+  contracts: {
+    multicall3: {
+      address: '0xffc391F0018269d4758AEA1a144772E8FB99545E',
+      blockCreated: 304545,
+    },
+  },
+  testnet: true,
+})

src/chains/index.ts

@@ -52,6 +52,7 @@ export { coreDao } from './definitions/coreDao.js'
 export { cronos } from './definitions/cronos.js'
 export { cronosTestnet } from './definitions/cronosTestnet.js'
 export { crossbell } from './definitions/crossbell.js'
+export { cyberTestnet } from './definitions/cyberTestnet.js'
 export { darwinia } from './definitions/darwinia.js'
 export { defichainEvm } from './definitions/defichainEvm.js'
 export { defichainEvmTestnet } from './definitions/defichainEvmTestnet.js'