Add direct download of proforma zip

[kkoehn]

adds download part for #1521

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 69.33%. Comparing base (4735098) to head (0ac4c89).
Report is 9 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2834      +/-   ##
==========================================
+ Coverage   69.31%   69.33%   +0.01%     
==========================================
  Files         211      211              
  Lines        6756     6760       +4     
==========================================
+ Hits         4683     4687       +4     
  Misses       2073     2073              

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

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.