[EVOL]: add Data Access Layer (DAL) documentation and best practices for React

[Karnak19]

✨ Title

[EVOL]: Add Data Access Layer (DAL) documentation to React guide

📄 Description

This PR enhances the React documentation by adding a comprehensive section on Data Access Layer (DAL) patterns. The addition provides developers with:

What this PR does:

• Adds a new "Data Access Layer (DAL)" section to the React README
• Provides comprehensive guidance on implementing data access patterns in React applications
• Includes practical TypeScript examples using modern tools like TanStack Query
• Establishes best practices for separating data concerns from UI components

Why it's needed:

• Fills a documentation gap around data fetching and management patterns
• Provides developers with proven architectural patterns for scalable React applications
• Promotes consistency across projects by establishing standard data access patterns
• Improves code maintainability and testability through proper separation of concerns

Key additions:

• Service pattern implementation with TypeScript interfaces
• TanStack Query integration examples
• Complete component usage patterns
• Best practices for type safety, error handling, and performance
• Relevant resource links for further learning

This enhancement aligns with modern React development practices and provides practical, actionable guidance that developers can immediately apply to their projects.