docs: Added self hosting documentation

[tonyoconnell]

What does this PR do?

Adds docs for Self Hosting Dashboard on Vercel

Type of change

• [ ] Bug fix (non-breaking change which fixes an issue)
• [ ] Chore (refactoring code, technical debt, workflow improvements)
• [ ] Enhancement (small improvements)
• [ ] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] This change adds a new database migration
• [x] This change requires a documentation update

How should this be tested?

Read the doc page

Checklist

Required

• [x] Filled out the "How to test" section in this PR
• [x] Self-reviewed my own code
• [x] Commented on my code in hard-to-understand bits
• [x] Ran pnpm build
• [x] Checked for warnings, there are none
• [x] Removed all console.logs
• [x] Merged the latest changes from main onto my branch with git pull origin main
• [x] My changes don't cause any responsiveness issues

Appreciated

• [ ] If a UI change was made: Added a screen recording or screenshots to this PR
• [x] Updated the ClassroomIO Docs if changes were necessary

[vercel[bot]]

The latest updates on your projects. Learn more about Vercel for Git ↗︎

Name	Status	Preview	Comments	Updated (UTC)
cio-docs	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jun 14, 2024 5:51am

[vercel[bot]]

@tonyoconnell is attempting to deploy a commit to the Rotimi Best's projects Team on Vercel.

A member of the Team first needs to authorize it.

[github-actions[bot]]

Thank you for following the naming conventions for pull request titles! 🙏