feat: add premium block (#3267)

* feat: add PremiumBlock Testnet

* Fix import issue

.changeset/unlucky-pears-cry.md

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

src/chains/definitions/premiumBlock.ts

@@ -0,0 +1,19 @@
+import { defineChain } from '../../utils/chain/defineChain.js'
+
+export const premiumBlockTestnet = /*#__PURE__*/ defineChain({
+  id: 23_023,
+  name: 'PremiumBlock Testnet',
+  nativeCurrency: { name: 'Premium Block', symbol: 'PBLK', decimals: 18 },
+  rpcUrls: {
+    default: {
+      http: ['https://rpc.premiumblock.org'],
+    },
+  },
+  blockExplorers: {
+    default: {
+      name: 'PremiumBlocks Explorer',
+      url: 'https://scan.premiumblock.org',
+    },
+  },
+  testnet: true,
+})

src/chains/index.ts

@@ -352,6 +352,7 @@ export { polygonZkEvm } from './definitions/polygonZkEvm.js'
 export { polygonZkEvmCardona } from './definitions/polygonZkEvmCardona.js'
 /** @deprecated Use `polygonZkEvmCardona` instead. */
 export { polygonZkEvmTestnet } from './definitions/polygonZkEvmTestnet.js'
+export { premiumBlockTestnet } from './definitions/premiumBlock.js'
 export { pulsechain } from './definitions/pulsechain.js'
 export { pulsechainV4 } from './definitions/pulsechainV4.js'
 export { ql1 } from './definitions/ql1.js'