Create a comprehensive README for NeetCode LeetCode Solutions repository

[Copilot]

This PR addresses the issue of creating a simple README for the repository by significantly improving the existing README.md file while maintaining its original intent.

Changes Made

Fixed Issues

• Grammar correction: Fixed spelling error "wriiting" → "writing"
• Content clarity: Improved sentence structure and readability

Enhanced Structure

• Added proper markdown sections with clear headings
• Organized content into logical sections: About, Repository Structure, How to Use, Contributing, and Contact
• Added a descriptive subtitle that clearly explains the repository's purpose

Added Value

• Repository Structure section: Lists all NeetCode curriculum topics (Arrays & Hashing, Two Pointers, Dynamic Programming, etc.) to set expectations for future organization
• How to Use section: Describes what users can expect from each solution (problem statement, explanation, complexity analysis, code, and test cases)
• Contributing guidelines: Provides clear ways for others to contribute to the repository
• Contact information: Directs users to open issues for questions or suggestions

Before

# NeetCode_LeetCode_Solutions
Neet Code provides students with a streamlined version of important, theoretical and coding questions, which everyone must solve. I will be going through the Neet Code repository of questions providing solutions along with theoretical background on how it works on paper and wriiting.

After

A well-structured, professional README with 6 clear sections that provides comprehensive information about the repository's purpose, expected structure, and how to use and contribute to it.

The improved README maintains the original author's vision while making it much more accessible and useful for potential contributors and users of the repository.

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