Add USWDS In-page Navigation component to base library

[jbouder]

Is your feature request related to a problem? Please describe.
Add the USWDS In-page Navigation component to the base library as a reusable React Component.

Describe the solution you'd like
The following component should be converted to a React component, as part of the base library: https://designsystem.digital.gov/components/in-page-navigation/.

Conversion of this component should include the following:

• Add new component (tsx)
• Add Storybook stories as needed (stories.tsx)
• Add Unit Tests to cover functionality (test.tsx)
• Add index.ts to export the component
• Add the component export to the default index.ts

Describe alternatives you've considered
N/A, this is a USWDS component

Additional context
The component should be implemented to make it as reusable and as extensible as possible.

[jbouder]

Closing given the upcoming USWDS move to web components.