feat: add wallet demo implementation for bounty submission

[ScapeXYZ]

Overview

This pull request introduces a complete Wallet Demo integration built for the OM1 bounty task.
The implementation adds a simple and effective way to connect multiple crypto wallets using WalletConnect and injected providers (like MetaMask, Trust Wallet, and Rabby).

Changes

• Integrated WalletConnect QR modal for external wallet connection
• Added support for injected providers (MetaMask, Rabby, etc.)
• Built a responsive React + Vite front-end for the demo
• Added connection state management and sign message flow
• Ensured compatibility with OM1 environment and existing module structure

Testing

• Tested locally using Vite dev server
• Verified successful wallet connection via QR and injected providers
• Confirmed proper disconnect and reconnect flows
• Validated message signing and UI responsiveness across devices

Impact

This demo shows how OM1 can integrate wallet connection capabilities into future modules or dApp features.
It enhances the developer experience by serving as a modular example for onboarding wallet functionalities.

Additional Information

• Implemented using React, wagmi, and WalletConnect v2
• Code tested in isolated wallet-demo directory before integration
• Demo video proof: [Add your YouTube link here]