Add validation for the Service Account ID in interactive mode

```shell
? Service Account ID: https://api.stage.openshift.com/?urls.primaryName=Service%20Registry%20service%20fleet%20manager%20service
? Credentials file format:  [Use arrows to move, type to filter, ? for more help]
> env
  json
  properties
❯ rhoas serviceaccount reset-credentials
```

If I interactively enter the service account ID, it should validate that the ID is a UUID.