Arcade demo on About page of docs

[merobi-hub]

Problem

We could use a demo on the website, and Arcade offers a free tool with functionality similar to Navattic.

Solution

This adds an interactive demo using Arcade.

One-line summary: interactive demo widget in docs

Checklist

• You've signed-off your work
• Your changes are accompanied by tests (if relevant)
• Your change contains a small diff and is self-contained
• You've updated any relevant documentation (if relevant)
• You've included a one-line summary of your change for the CHANGELOG.md (Depending on the change, this may not be necessary).
• You've versioned your .sql database schema migration according to Flyway's naming convention (if relevant)
• You've included a header in any source code files (if relevant)

[netlify]

✅ Deploy Preview for peppy-sprite-186812 ready!

Name	Link
🔨 Latest commit	a1a0962
🔍 Latest deploy log	https://app.netlify.com/sites/peppy-sprite-186812/deploys/6786833352f1c900088f2ba9
😎 Deploy Preview	https://deploy-preview-3009--peppy-sprite-186812.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.

[merobi-hub]

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 81.18%. Comparing base (31410a9) to head (a1a0962).

Additional details and impacted files

@@            Coverage Diff            @@
##               main    #3009   +/-   ##
=========================================
  Coverage     81.18%   81.18%           
  Complexity     1506     1506           
=========================================
  Files           268      268           
  Lines          7356     7356           
  Branches        325      325           
=========================================
  Hits           5972     5972           
  Misses         1226     1226           
  Partials        158      158           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.