Updated the README.md file with 300% More Content & 9 New Engineering Domains

[hritika2409]

🔧 Major Repo Overhaul: +9 New Domains, 300% More Prompts, Cross-Domain Features

• Added 9 new domains: Mobile, AI/ML, Data Eng, GameDev, Web3, IoT, QA, Performance, Modernization
• Expanded prompts in DevOps, Refactoring, Cloud, Security, Database
• Introduced cross-domain integration chains (e.g. DevOps, ML on Cloud)
• Added prompt usage guidelines, contribution rules, versioning, and changelog
• Upgraded from 13 → 22 domains | 50 → 150+ prompts | 300% content growth

[Achanandhi-M]

Hey @hritika2409, thanks for your contribution! This is really amazing. The prompt is very impressive, and I’m sure it will be helpful to everyone. I have a few suggestions:

1. I think we don’t need a "Prompt Usage Guidelines" section, as each prompt is different from one another.

2. Also, we don’t need sections like "Prompt Enhancement Techniques" or "Contributing, or a changelog" we already have a CONTRIBUTING.md file.

Additionally, we kindly ask that you sign the Developer Certificate of Origin (DCO). It’s a simple process that ensures your contribution complies with the necessary legal requirements.

Looking forward to your updated PR!