Validation support for TextInputGroup components

[dlabrecq]

We're currently using the beta TextInputGroup components for type ahead support in Cost Management and the HCS UI. This has been working fine until we discovered users can enter characters which our APIs don't support. For example, multiple trailing commas and ampersand characters need to be omitted from API requests.

We can parse these characters from the text input, but would like to have validation support. For example, it would be ideal to identify which characters are invalid. Currently, I don't see an easy way to apply the styling, icons, and help text provided by this "validated" example.

Cost Management's type ahead component