Enforce Prettier Format Check on PRs

[leoAshu]

🚀 Summary

This PR adds a GitHub Actions workflow to enforce Prettier formatting on all pull requests targeting the main branch. It ensures consistent code style across the codebase and helps prevent formatting-related issues during code review.

Key changes include:

• Added .github/workflows/prettier.yml for running prettier --check . on PRs to main
• Updated package.json with format and format:check scripts
• Introduced Prettier config file (.prettier.config.js)

🧩 Related Issues / Tasks

• Closes [FEATURE] Enforce Prettier Checks on GitHub PRs #17

🛠️ Type of Change

• 🐞 Bug fix
• ✨ New feature
• 🧨 Breaking change
• 🔨 Enhancement/Refactor
• 📝 Documentation
• 📜 Other (please describe):

✅ Checklist

• The code is formatted with Prettier (npm run format or npx prettier --write .)
• PR references a linked Issue or Task number
• Tested on both iOS and Android devices/emulators
• No unnecessary logs or commented-out code
• UI changes, if any, have been reviewed visually
• All tests are passing (if applicable)
• Added or updated documentation where necessary

📸 Screenshots / Videos (UI changes only)

N/A

🧪 Test Plan

N/A