✨ [#4993] Implement fetching select(boxes) options from Referentielijsten

[stevenbal]

Closes #4993

Changes

• Implement fetching select(boxes) options from Referentielijsten
• Add docker-compose file and fixtures for Referentielijsten

Checklist

Check off the items that are completed or not relevant.

• Impact on features

  • Checked copying a form
  • Checked import/export of a form
  • Config checks in the configuration overview admin page
  • Problem detection in the admin email digest is handled

• Release management

  • I have labelled the PR as "needs-backport" accordingly

• I have updated the translations assets (you do NOT need to provide translations)

  • Ran ./bin/makemessages_js.sh
  • Ran ./bin/compilemessages_js.sh

• Dockerfile/scripts

  • Updated the Dockerfile with the necessary scripts from the ./bin folder

• Commit hygiene

  • Commit messages refer to the relevant Github issue
  • Commit messages explain the "why" of change, not the how

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.68%. Comparing base (1658eca) to head (4c63012).
Report is 21 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #4996   +/-   ##
=======================================
  Coverage   96.67%   96.68%           
=======================================
  Files         765      767    +2     
  Lines       26131    26205   +74     
  Branches     3407     3414    +7     
=======================================
+ Hits        25262    25336   +74     
  Misses        606      606           
  Partials      263      263           

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[stevenbal]

@sergei-maertens I've changed the code to raise a 503 if the options could not be fetched

I do think this needs some changes in the SDK to display the unavailability message Open Forms is currently unavailable, please try again later. instead of a generic Er ging helaas iets fout right?

I've also added a task to raise 503 in case of service fetch failures to the service fetch epic #4965

[sergei-maertens]

@sergei-maertens I've changed the code to raise a 503 if the options could not be fetched

I do think this needs some changes in the SDK to display the unavailability message Open Forms is currently unavailable, please try again later. instead of a generic Er ging helaas iets fout right?

I've also added a task to raise 503 in case of service fetch failures to the service fetch epic #4965

I recently stumbled on https://github.com/open-formulieren/open-forms-sdk/blob/da9810bef07411f6adb9e13958c2f8aa08195f13/src/components/RequireSubmission.jsx#L32 and I know that https://github.com/open-formulieren/open-forms-sdk/blob/da9810bef07411f6adb9e13958c2f8aa08195f13/src/components/Errors/ErrorBoundary.jsx#L161 also seems to handle a particular case, looks like the code above decides about generic error vs. specific :)