Implement comment system

[marchbox]

• https://greenash.net.au/thoughts/2022/03/email-based-comment-moderation-with-netlify-functions/
• https://docs.netlify.com/forms/setup/

Workflow:

1. Use Netlify Forms to collect comment submissions
   • Use Ajax form for better UX but make sure non-JS works, too
   • Should mention that all comments become public upon approval. If they want to contact me directly, go to the Contact link.
2. Use Netlify Functions to set up a Scheduled Background Function:
   • This function checks all the verified comment submissions
   • Uses https://github.com/octokit/octokit.js to create a pull request to send comments to GitHub
   • Run this function at 9 AM everyday
3. Me review the pull request, approve to merge into mainstreet
4. Netlify rebuild, comments display

• Make some fun idea with avatar?