Fix <Tooltip /> CSS 🔧

[0ubbe]

Following #164, get Tippy's CSS from a CDN rather than add it as part of our package.

This is to keep our build simple and passing without the need to make Rollup aware of how to handle CSS files 💆🏻‍♂️

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (master@0caff36). Click here to learn what that means.
The diff coverage is 100%.

@@            Coverage Diff            @@
##             master     #165   +/-   ##
=========================================
  Coverage          ?   92.82%           
=========================================
  Files             ?       70           
  Lines             ?      641           
  Branches          ?      166           
=========================================
  Hits              ?      595           
  Misses            ?       46           
  Partials          ?        0

Impacted Files	Coverage Δ
src/components/hooks/useForm/useForm.ts	100% <100%> (ø)
...c/components/organisms/Form/context/FormContext.ts	100% <100%> (ø)

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[0ubbe]

Seems that we need to teach Rollup how to read JSON as well:

/Users/lluis.agusti/Code/zopa-react-components/src/index.ts → cjs, es...
[!] (plugin babel) SyntaxError: /Users/lluis.agusti/Code/zopa-react-components/node_modules/tippy.js/package.json: Unexpected token, expected
 ";" (2:8)

  1 | {
> 2 |   "name": "tippy.js",
    |         ^
  3 |   "version": "5.1.4",
  4 |   "description": "Highly customizable tooltip and popover library",
  5 |   "main": "dist/tippy.cjs.js",
node_modules/tippy.js/package.json (2:8)

( when running yarn compile 😪 , breaks due to this import )

[poteirard]

🎉 This PR is included in version 2.8.0 🎉

The release is available on:

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

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