Floating Label component refinament

• I have searched the Issues to see if this bug has already been reported
• I have tested the latest version

Summary

I detected a few issues with FloatingLabel component that needs to be addressed:

• General component export is missing here:
  https://github.com/themesberg/flowbite-react/blob/main/src/components/index.ts

• Component theme type is wrong:
  https://github.com/themesberg/flowbite-react/blob/9e5a4a0d2d8d01fc958a5426949b88911182f23a/src/components/Flowbite/FlowbiteTheme.ts#L1

• Internal component export is wrong:
  https://github.com/themesberg/flowbite-react/blob/9e5a4a0d2d8d01fc958a5426949b88911182f23a/src/components/FloatingLabel/index.ts#L1

• Theme is using any - it should be an interface
  https://github.com/themesberg/flowbite-react/blob/9e5a4a0d2d8d01fc958a5426949b88911182f23a/src/components/FloatingLabel/FloatingLabel.tsx#L8

• Component color must be keys FlowbiteColors
  https://github.com/themesberg/flowbite-react/blob/9e5a4a0d2d8d01fc958a5426949b88911182f23a/src/components/FloatingLabel/FloatingLabel.tsx#L19

• Default color must be defined here, since it is optional
  https://github.com/themesberg/flowbite-react/blob/9e5a4a0d2d8d01fc958a5426949b88911182f23a/src/components/FloatingLabel/FloatingLabel.tsx#L31
  So, this line is nonsense:
  https://github.com/themesberg/flowbite-react/blob/9e5a4a0d2d8d01fc958a5426949b88911182f23a/src/components/FloatingLabel/FloatingLabel.tsx#L45

Context

What are you trying to accomplish? How is your use case affected by not having this feature?

Start with src/components/index.ts, src/components/Flowbite/FlowbiteTheme.ts, and the files under src/components/FloatingLabel/ referenced in the issue. Check each listed export and type concern against the component's current definitions; done means the component is exported correctly and its theme, color, and optional default-color definitions match the requested types.