feat: Add wallet connection status UI component (#241)

[Belzabeem]

Closes #241

Description:

This PR implements the wallet connection status UI as per issue #241.

Features:

• Show connected wallet address
• Display wallet connection status
• Add connect and disconnect actions
• Detect unsupported networks
• Show loading state while connecting

Requirements:

• Support MetaMask connection
• Reusable wallet status component
• Responsive UI for desktop and mobile
• Handle wallet connection errors gracefully

Changes:

• Added NetworkBadge.tsx component
• Added WalletConnector.tsx component
• Added walletStore.ts for state management

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[nanaf6203-bit]

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