Feature Wix example in docs

[shilman]

Issue: N/A

What I did

Add wix styleguide

How to test

yarn bootstrap:docs
yarn docs:dev
open http://localhost:8000/examples/

Is this testable with jest or storyshots?

Does this need a new example in the kitchen sink apps?

Does this need an update to the documentation?

If your answer is yes to any of these, please make sure to include it in your PR.

[marchdoe]

Looks good to me!

[codecov]

Codecov Report

Merging #2191 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #2191   +/-   ##
=======================================
  Coverage   21.43%   21.43%           
=======================================
  Files         263      263           
  Lines        5803     5803           
  Branches      698      688   -10     
=======================================
  Hits         1244     1244           
- Misses       4024     4055   +31     
+ Partials      535      504   -31

Impacted Files	Coverage Δ
app/vue/src/server/config/babel.js	0% <0%> (-100%)	⬇️
app/vue/src/server/babel_config.js	0% <0%> (-77.42%)	⬇️
lib/ui/src/modules/api/actions/api.js	50.47% <0%> (ø)	⬆️
...es__/update-addon-info/update-addon-info.output.js	0% <0%> (ø)	⬆️
addons/storyshots/src/require_context.js	0% <0%> (ø)	⬆️
lib/ui/src/modules/ui/containers/layout.js	12.5% <0%> (ø)	⬆️
lib/ui/src/modules/shortcuts/actions/shortcuts.js	6.25% <0%> (ø)	⬆️
.../ui/src/modules/ui/components/left_panel/header.js	29.62% <0%> (ø)	⬆️
lib/ui/src/modules/ui/components/layout/usplit.js	38.7% <0%> (ø)	⬆️
lib/ui/src/modules/ui/configs/handle_keyevents.js	33.33% <0%> (ø)	⬆️
... and 22 more

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