feat: add vercel.json to solve csp issues

[amaan-bhati]

Description

-[x] Added the vercel.json file for the csp fix similar to the landing page

• Research about whether this would be the best practice to replace the config file with vercel.json, consider the drawbacks, the tradeoffs and more.

Changes

• Have only added a vercel.json file

Type of Change

• Chore (maintenance, refactoring, tooling updates)
• Bug fix (non-breaking change that fixes an issue)
• New feature (change that adds functionality)
• Breaking Change (may require updates in existing code)
• UI improvement (visual or design changes)
• Performance improvement (optimization or efficiency enhancements)
• Documentation update (changes to README, guides, etc.)
• CI (updates to continuous integration workflows)
• Revert (undo a previous commit or merge

[github-actions]

🔍 Lighthouse Scores

Metric	⚡ PR Branch	📦 Main Branch
Performance	34	46
Accessibility	94	94
Best Practices	75	75
SEO	100	100