Migrate login endpoint to lambda

[netlify[bot]]

✅ Deploy Preview for instagramtimecapsule ready!

Name	Link
🔨 Latest commit	99f09e6998134c9f102926549e024e56851b0841
🔍 Latest deploy log	https://app.netlify.com/sites/instagramtimecapsule/deploys/653eed3872dedb00083ed795
😎 Deploy Preview	https://deploy-preview-35--instagramtimecapsule.netlify.app/
📱 Preview on mobile	Toggle QR Code... Use your smartphone camera to open QR code link.

---

To edit notification comments on pull requests, go to your Netlify site configuration.