feat: add Shardeum mainnet (#3599)

* Add Shardeum mainnet

* Update shardeum.ts

* Update shardeum.ts

---------

Co-authored-by: jxom <[email protected]>

Author: Yutaro-Mori-eng

.changeset/shaggy-ads-relax.md

@@ -0,0 +1,5 @@
+---
+"viem": patch
+---
+
+Added Shardeum mainnet.

src/chains/definitions/shardeum.ts

@@ -0,0 +1,19 @@
+import { defineChain } from '../../utils/chain/defineChain.js'
+
+export const shardeum = /*#__PURE__*/ defineChain({
+  id: 8118,
+  name: 'Shardeum',
+  nativeCurrency: { name: 'Shardeum', symbol: 'SHM', decimals: 18 },
+  rpcUrls: {
+    default: {
+      http: ['https://api.shardeum.org'],
+    },
+  },
+  blockExplorers: {
+    default: {
+      name: 'Shardeum Explorer',
+      url: 'https://explorer.shardeum.org',
+    },
+  },
+  testnet: false,
+})

src/chains/index.ts

@@ -452,6 +452,7 @@ export { seiTestnet } from './definitions/seiTestnet.js'
 export { sepolia } from './definitions/sepolia.js'
 export { shape } from './definitions/shape.js'
 export { shapeSepolia } from './definitions/shapeSepolia.js'
+export { shardeum } from './definitions/shardeum.js'
 export { shardeumSphinx } from './definitions/shardeumSphinx.js'
 export { shibarium } from './definitions/shibarium.js'
 export { shibariumTestnet } from './definitions/shibariumTestnet.js'