feat: add Abstract Testnet chain (#2576)

* added Abstract Testnet chain

* Update abstractTestnet.ts

Author: jonathangus

.changeset/real-cherries-scream.md

@@ -0,0 +1,5 @@
+---
+"viem": patch
+---
+
+Added Abstract Testnet

src/chains/definitions/abstractTestnet.ts

@@ -0,0 +1,21 @@
+import { defineChain } from '../../utils/chain/defineChain.js'
+
+export const abstractTestnet = /*#__PURE__*/ defineChain({
+  id: 11_124,
+  name: 'Abstract Testnet',
+  nativeCurrency: {
+    decimals: 18,
+    name: 'ETH',
+    symbol: 'ETH',
+  },
+  rpcUrls: {
+    default: { http: ['https://api.testnet.abs.xyz'] },
+  },
+  blockExplorers: {
+    default: {
+      name: 'Abstract Block Explorer',
+      url: 'https://explorer.testnet.abs.xyz',
+    },
+  },
+  testnet: true,
+})

src/chains/index.ts

@@ -1,6 +1,7 @@
 export type { Chain } from '../types/chain.js'
 
 // biome-ignore lint/performance/noBarrelFile: entrypoint module
+export { abstractTestnet } from './definitions/abstractTestnet.js'
 export { acala } from './definitions/acala.js'
 export { ancient8 } from './definitions/ancient8.js'
 export { ancient8Sepolia } from './definitions/ancient8Sepolia.js'