feat: Controls refacto + add number and textarea (fix #30)

[hugoattal]

Linked to #30

Description

I added HstNumber and HstTextarea and made a few changes, tell me if there's something bothering you...

• I removed the slot and use a title property for controls
  • I don't see a good usage of slot instead of title, what would the user do with it beyond just putting some text?
  • I think it's easier to provide a title attribute so that overflowed valued can be read on hover
• I changed HstInput to HstText and remove the attributes handling
  • I think giving a straight input isn't very helpful to the end-user.
  • For example, we can't provide cool features for specific types (like numbers for example)
  • I think we should give ready-to-use controls instead and HstText give a good hint of what kind of data is expected
• I added HstWrapper to get a coherent design between controls
  • I added a reverse property for the specific usage inside Histoire (for Rotate or Checkerboard tooltips)
• It's not linked to this issue, but I added a way to specify percentages for grid layout variant (I thought it was useful to get a vertical list by settings the width to 100%)

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What is the purpose of this pull request?

• Bug fix
• New Feature
• Documentation update
• Other

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