Fluid inputs: FluidDropdown

[tay1orjones]

This issue is for the primary implementation and design of the FluidDropdown component.

Checklist

• Fluid inputs: Dropdown docs carbon-website#3174
  • Update "style" and "usage" tabs of component page to include Fluid variant
• [Figma] Add "Fluid-input: Dropdown" carbon-design-kit#575
• Fluid inputs: Add FluidDropdown experimental implementation
  • Place implementation within a new component, FluidComponentName
  • Add VRT tests via storybook story e2e setup
  • Add unit tests (likely simple, eg. "does the classname get added")
  • Add storybook example
  • Add it to the FluidForm story
  • Ensure styles are properly scoped to their own file
  • Add component: FluidDropdown label to repo for triaging issues
• Fluid inputs: FluidDropdownSkeleton

Spec

Sketch file | Figma file