[Docs]: Add link to Github source for controls

[spmonahan]

Library

React Components / v9 (@fluentui/react-components)

Describe the feature that you would like added

It would be great if a control's doc page linked to the control's source on Github.

For example the Input Storybook page could have a link to the Input source code.

Since Fluent is a monorepo and the v9 controls in particular are fairly deep in the packages folder this would make the source for Fluent v9 more discoverable.

Have you discussed this feature with our team

No response

Additional context

No response

Validations

• [X] Check that there isn't already an issue that request the same feature to avoid creating a duplicate.