feat(form-input): support custom-range input + validation and input styles

[tmorehouse]

Description of PR:

Support the Bootstrap V4.1 custom range input styles.

Adds in temporary CSS fixes until V4.2 is released
Adds in temporary CSS for validation and input-group support

fixes #2113

An issue has been created at twbs/bootstrap twbs/bootstrap#27572 requesting these be added

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PR checklist:

What kind of change does this PR introduce? (check at least one)

• Bugfix
• Feature
• Enhancement to an existing feature
• ARIA accessibility
• Documentation update
• Other, please describe: Custom CSS

Does this PR introduce a breaking change? (check one)

• Yes
• No

The PR fulfills these requirements:

• It's submitted to the dev branch, not the master branch
• When resolving a specific issue, it's referenced in the PR's title (e.g. fixes #xxxx[,#xxxx], where "xxxx" is the issue number)

If new features/enhancement/fixes are added or changed:

• Includes documentation updates
• New/updated tests are included and passing (if required)
• Existing test suites are passing
• The changes have not impacted the functionality of other components or directives
• ARIA Accessibility has been taken into consideration (does it affect screen reader users or keyboard only users?)

If adding a new feature, or changing the functionality of an existing feature, the PR's description includes:

• A convincing reason for adding this feature (to avoid wasting your time, it's best to open a suggestion issue first and wait for approval before working on it)

PR titles should following the Conventional Commits naming convention

[codecov]

Codecov Report

Merging #2120 into dev will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##              dev    #2120   +/-   ##
=======================================
  Coverage   64.77%   64.77%           
=======================================
  Files         156      156           
  Lines        2950     2950           
  Branches      811      811           
=======================================
  Hits         1911     1911           
  Misses        752      752           
  Partials      287      287

Impacted Files	Coverage Δ
src/components/form-input/form-input.js	100% <ø> (ø)	⬆️

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[tmorehouse]

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