setup GitHub Actions CI/CD pipeline

[omkarhole]

📊 Configuration Files

The following configuration files were added to implement the CI/CD pipeline:

• .github/workflows/ci.yml – Runs linting, unit tests, build verification, and bundle size checks.
• .github/workflows/cd.yml – Handles automated deployments to staging and production using Vercel and builds Docker images.
• .github/workflows/security.yml – Performs security scans including dependency audit, CodeQL, Snyk, secret detection, and license checks.
• .github/workflows/quality.yml – Runs code quality checks such as complexity analysis, Lighthouse performance audits, accessibility testing, and type validation.

closes: #414

@KaranUnique plz review it

[vercel]

@omkarhole is attempting to deploy a commit to the Karan Manickam's projects Team on Vercel.

A member of the Team first needs to authorize it.

[github-advanced-security]

This pull request sets up GitHub code scanning for this repository. Once the scans have completed and the checks have passed, the analysis results for this pull request branch will appear on this overview. Once you merge this pull request, the 'Security' tab will show more code scanning analysis results (for example, for the default branch). Depending on your configuration and choice of analysis tool, future pull requests will be annotated with code scanning analysis results. For more information about GitHub code scanning, check out the documentation.

[github-advanced-security]

CodeQL found more than 20 potential problems in the proposed changes. Check the Files changed tab for more details.