fix: ramp slider (#829)

[bernhard-adobe]

Adding back ramp-slider and removing color-slider.

Description

Addresses issue #829

• added back ramp-slider
• removed color-slider from slider page that is now it's own component under /docs/colorslider.html

How and where has this been tested?

URL: http://localhost:3000/docs/slider.html
Chrome Version 85.0.4183.102 (Official Build) (64-bit) on MacOS

Screenshots

To-do list

• If my change impacts other components, I have tested to make sure they don't break.
• If my change impacts documentation, I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.

• This pull request is ready to merge.

[lazd]

Commit message needs to include:

BREAKING CHANGE: Slider color variant removed, used Color Slider component

Also need migration guide.

[bernhard-adobe]

Good points @lazd .
I added a migration guide. Unfortunately your suggested commit message is not working because of the commit rules with uppercases:

$ g commit -m "BREAKING CHANGE: Slider color variant removed, used Color Slider component"
husky > commit-msg (node v12.16.2)
⧗   input: BREAKING CHANGE: Slider color variant removed, used Color Slider component
✖   header must not be longer than 72 characters, current length is 74 [header-max-length]
✖   subject may not be empty [subject-empty]
✖   type may not be empty [type-empty]

✖   found 3 problems, 0 warnings
ⓘ   Get help: https://github.com/conventional-changelog/commitlint/#what-is-commitlint

I used instead g commit -m "fix: breaking change: slider color variant moved to color slider. (#850)"
I also added the breaking-change label.

[adobe-spectrum-bot]

VRT successfully! 🎊

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[GarthDB]

The disabled color seems to have changed for ramp slider. Is that a result of the tokens changing?

[adobe-spectrum-bot]

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[adobe-spectrum-bot]

VRT successfully! 🎊

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