refac: reorganize wallet connection architecture

[EjembiEmmanuel]

PR Fixes:

• Refactors wallet connection architecture for better modularity and maintainability
• Consolidates wallet logic into dedicated components
• Removes legacy hook-based wallet implementation

What Changed

This PR reorganizes the wallet connection architecture by:

• Created ConnectButton component: Extracted wallet connection UI logic into a dedicated, reusable component
• Moved Providers to components: Relocated from src/app/template.tsx to src/components/Providers.tsx for better organization
• Added connectors module: Centralized Starknet wallet connector configuration (ArgentMobile, Braavos, ArgentX, etc.)
• Removed legacy hooks: Deleted useWalletConnection.tsx and wallet.ts in favor of the new architecture
• Updated references: Updated Navbar.tsx, Strategy.tsx, YieldCard.tsx, and layout.tsx to use the new components

Benefits

• ✨ Cleaner separation of concerns
• 🔧 Easier to maintain and test wallet functionality
• 📦 Better component reusability

Vercel website link

• https://starkfarm-client-eight.vercel.app/

Checklist before requesting a review

• I have performed a self-review of my code
• I assure there is no similar/duplicate pull request regarding same issue
• My PR passes all checks (build, lint, formatting, etc)

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