Add addonlinks repo

[ndelangen]

Issue: #1016

What I did

ADD addon-links to the repo

How to test

npm install
npm run bootstrap
cd examples/cra-storybook
npm run storybook

Click on stories link in Welcome story.

[codecov]

Codecov Report

Merging #1021 into master will decrease coverage by 0.04%.
The diff coverage is 0%.

@@            Coverage Diff             @@
##           master    #1021      +/-   ##
==========================================
- Coverage   12.61%   12.56%   -0.05%     
==========================================
  Files         192      196       +4     
  Lines        4425     4442      +17     
  Branches      707      711       +4     
==========================================
  Hits          558      558              
- Misses       3242     3255      +13     
- Partials      625      629       +4

Impacted Files	Coverage Δ
packages/addon-links/register.js	0% <0%> (ø)
packages/addon-links/src/manager.js	0% <0%> (ø)
packages/addon-links/src/index.js	0% <0%> (ø)
packages/addon-links/src/preview.js	0% <0%> (ø)

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[ndelangen]

Please review and merge @shilman

[shilman]

Thanks @ndelangen! Much appreciated. Will review, merge, and update the documentation tomorrow morning.

[shilman]

LGTM and tested

[nx-cloud]

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