docs(readme): add full query-param matrix with examples and defaults

[JhaSourav07]

🧩 Background

Parameter usage is discoverable but spread across sections, making onboarding harder for new users.

🎯 Objective

Add a single query-parameter matrix in README with defaults, allowed values, and examples.

📁 Files to check

• README.md
• THEMES.md

🛠️ Implementation steps

• Document each supported query parameter.
• Include defaults, constraints, and one practical example per parameter.
• Cross-link related sections and keep naming consistent.

✅ Definition of done

• README contains a complete, easy-to-scan parameter table.
• Examples are copy-paste friendly.
• Docs stay consistent with current API behavior.

[Shikhar-404exe]

I would like to work on this issue, please assign this issue to me so I can start working on it.

[Antra1705]

I've gone through the README and THEMES.md — the query params are scattered across multiple sections with inconsistent naming in a few places. I'll consolidate them into a single reference table with columns for parameter name, default, allowed values, and a copy-paste example per param, then add cross-links to the relevant sections.
Built ApiForge (a REST API testing tool) so writing clean, developer-facing API docs is something I've done hands-on. Ready to submit a PR quickly.
Could you please assign this to @Antra1705?

[mahek888]

Hello! I'm new to contributing and would like to take this on. Could you please assign this to me?

[JhaSourav07]

/assign @Shikhar-404exe

[github-actions]

✅ Successfully assigned issue to @Shikhar-404exe

💡 Please read CONTRIBUTING.md if you haven't already. Good luck! 🚀

[github-actions]

⚠️ Assignment automatically removed due to inactivity.
Feel free to reclaim the issue if you want to continue working on it.