Update Input Checkbox Component Styles and functionality

[djalmaaraujo]

Description

Fixes #237

Roadmap

• [x] Implement color changes and adjust new variants
• [x] Add the intermediate state
• [x] Add documentation to the component

Checklist

• [x] This PR has good automated test coverage
• [x] The storybook for the component has been updated

Steps to Test

1. Pull down PR.
2. npm run dev && npm install
3. Open http://localhost:6006/?path=/docs/form-checkbox--docs OR https://deploy-preview-355--vip-design-system-components.netlify.app/?path=/docs/form-checkbox--docs
4. The Checkbox component examples work as expected
5. New color variants are available: Primary, Success, Error, Warning, and Info.
6. New Intermediate state is available as a storybook example

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