Add support for sepolia

Author: uditdc

src/utils/viemClient.ts

@@ -1,5 +1,5 @@
 import { type PublicClient, createPublicClient, http } from 'viem'
-import { type Chain, holesky, mainnet } from 'viem/chains'
+import { type Chain, holesky, sepolia, mainnet } from 'viem/chains'
 
 let publicViemClient: PublicClient
 let network: Chain = mainnet