Add Nucleux - A Fresh Approach to State Management in React

[martyroque]

Add Nucleux to React State Management section

This PR adds Nucleux to the React State Management and Data Fetching section. Nucleux is a lightweight atomic state management library built on the publisher-subscriber pattern with IoC container design.

Why Nucleux should be included:

• Provides atomic updates that only re-render components subscribed to changed state
• Eliminates boilerplate with no providers, reducers, or action creators needed
• Offers built-in persistence capabilities with minimal configuration
• Includes dependency injection through IoC container for clean architecture
• Bundle size is extremely small (< 3KB gzipped)
• Fully TypeScript compatible with excellent type inference

The project is actively maintained and offers a compelling alternative to more complex state management solutions.

GitHub repo: https://github.com/martyroque/nucleux
NPM package: https://www.npmjs.com/package/nucleux

Thank you for considering this addition to the Awesome React list!