[BD-46] add loading state to CSS variables table

[viktorrusakov]

Description

Show skeleton in CSS variables table when loading them.

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.29%. Comparing base (fa882e1) to head (a05765b).
Report is 544 commits behind head on alpha.

Additional details and impacted files

@@           Coverage Diff           @@
##            alpha    #2858   +/-   ##
=======================================
  Coverage   93.29%   93.29%           
=======================================
  Files         215      215           
  Lines        3638     3638           
  Branches      898      898           
=======================================
  Hits         3394     3394           
  Misses        239      239           
  Partials        5        5           

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[PKulkoRaccoonGang]

it looks amazing! 💯

[openedx-webhooks]

@viktorrusakov 🎉 Your pull request was merged! Please take a moment to answer a two question survey so we can improve your experience in the future.

[openedx-semantic-release-bot]

🎉 This PR is included in version 22.0.0-alpha.19 🎉

The release is available on:

• npm package (@alpha dist-tag)
• GitHub release

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[openedx-semantic-release-bot]

🎉 This PR is included in version 23.0.0-alpha.1 🎉

The release is available on:

• npm package (@alpha dist-tag)
• GitHub release

Your semantic-release bot 📦🚀

[openedx-semantic-release-bot]

🎉 This PR is included in version 23.0.0 🎉

The release is available on:

• npm package (@latest dist-tag)
• GitHub release

Your semantic-release bot 📦🚀