Add prop to add className to prefix or suffix

[hexadeciman]

I would be super nice if NumberFlow element exposed 2 props:
suffixClassName and prefixClassName which would allow us to style them separately.

Can I create a PR for that ?

[barvian]

Hi, they can be styled separately using the ::part syntax (docs): https://codesandbox.io/p/sandbox/number-flow-react-forked-r4j23r?workspaceId=ws_SANn7Fxiketop95tKwKpeJ 👋