Integrate WAGMI and Add Utility to Fetch User Balance on Monad

Implement wallet connection using wagmi, specifically targeting Monad network only. Alongside, add a utility function that accepts a wallet address or ENS name and returns the user's current balance on Monad.

- Setup wagmi with Monad RPC provider.
- Configure the Monad chain using createConfig or configureChains.
- Create a utility function:
```
async function getMonadBalance(addressOrENS: string): Promise

```

- Resolve ENS names to wallet address (if applicable).
- Use Monad RPC to fetch native balance.
- Display balance in UI or toast.