Easily Add Badge To Upper Right of Button

### On which framework/platform would you like to see this feature implemented?

React

### Which UI component is this feature-request for?

Other

### Please describe your feature-request in detail.

Similar to MUI Badge (https://mui.com/material-ui/react-badge/), I'd like to be able to add a Badge to the top of a button indicating the number of notifications. There is currently no easy way to do this with Amplify UI I'm aware of.

### Please describe a solution you'd like.

There could be a prop on `Button` which accepts a Badge putting it on upper right hand corner of button. Location could be configurable.

### We love contributors! Is this something you'd be interested in working on?

- [ ] 👋 I may be able to implement this feature request.
- [ ] ⚠️ This feature might incur a breaking change.

Start at the Amplify UI Button component and review how existing UI components are composed, then compare the requested behavior with the MUI Badge reference. Define how a Badge prop and configurable position should work on a Button, and verify that the notification count appears at the button’s upper-right corner without disrupting existing button behavior.

Written by the indexing model from the issue text.