Add quick start guide for first-time contributors

[SuryaGanesh284]

🚀 Pull Request

📋 Referenced Issue

This is a documentation improvement to help first-time contributors get started more easily. No specific issue referenced.

ℹ️ About the PR

This PR adds a "Quick Start for First-Time Contributors" section to the CONTRIBUTING.md file.

What's new:

• A clear, numbered workflow (9 steps) guiding new contributors from finding an issue to opening a PR
• Links to relevant sections like "Run Locally" and the issues page
• Helpful tips encouraging newcomers to start with documentation and bug fixes
• Emoji icons for better visual appeal and readability

Why this change:

• Makes the contribution process less intimidating for newcomers
• Reduces common questions about "where to start"
• Aligns with the project's "good-first-issue" friendly approach
• Complements the existing detailed sections without replacing them

📸 Testing Scenarios / Screenshots

No functional testing needed - this is a documentation-only change. The markdown renders correctly in GitHub's preview.

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