chore: vercel deployment workflow

[Solomonsolomonsolomon]

🚀 Pull Request

📝 Description

• This PR closes Implement CI/CD Pipeline for Automated Testing and Deployment #65

Added a deploy.yml that deploys the project to Vercel on every push.
It installs dependencies using builds the project, and triggers deployment via the Vercel CLI.
production deployments only run when pushing to the main branch.
This workflow requires the following environment variables to be set in GitHub Secrets:
VERCEL_TOKEN
VERCEL_PROJECT_ID
VERCEL_ORG_ID

🔄 Type of Change

• Bug fix (non-breaking change that fixes an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• UI/UX improvement
• Performance optimization
• Code refactor
• Documentation update
• Test coverage
• CI/CD improvement
• Other (please describe):

🧪 How Has This Been Tested?

• Unit tests
• Integration tests
• Manual testing
• Accessibility testing
• Cross-browser testing

📸 Screenshots

📋 Checklist

• My code follows the project's coding style
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing tests pass locally with my changes
• Any dependent changes have been merged and published

📚 Additional Context

🔗 Related Issues