Add Storybook.js

[NiccoMlt]

Add a component documentation with Storybook.js and publish it on GitHub Pages

[vercel]

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[codecov]

Codecov Report

Merging #27 into master will decrease coverage by 1.09%.
The diff coverage is 0%.

@@            Coverage Diff            @@
##           master      #27     +/-   ##
=========================================
- Coverage   30.55%   29.46%   -1.1%     
=========================================
  Files          20       22      +2     
  Lines         324      336     +12     
  Branches       62       62             
=========================================
  Hits           99       99             
- Misses        220      232     +12     
  Partials        5        5

Impacted Files	Coverage Δ
src/stories/index.stories.jsx	0% <0%> (ø)
src/stories/0-Welcome.stories.tsx	0% <0%> (ø)

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