chore: Exports HelperText component (#1066)

We want to export this component so we can use this outside of form
fields.

src/components/index.ts

@@ -21,6 +21,7 @@ export * from "./CssReset";
 export * from "./DnDGrid";
 export * from "./Filters";
 export * from "./Grid";
+export * from "./HelperText";
 export { HbLoadingSpinner, HbSpinnerProvider, HB_QUIPS_FLAVOR, HB_QUIPS_MISSION } from "./HbLoadingSpinner";
 export * from "./Icon";
 export * from "./IconButton";