Refactor plugin structure to modern style.

[netlify[bot]]

✅ Deploy Preview for lando-solr ready!

Name	Link
🔨 Latest commit	537dc5851285d236fee30ce399d7300693e70683
🔍 Latest deploy log	https://app.netlify.com/sites/lando-solr/deploys/655d92554ec7af000838dd2a
😎 Deploy Preview	https://deploy-preview-41--lando-solr.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.