Introduce new combobox and make it work with chip input

We introduced a new accessible combobox component. This component is based on headless ui and made compatible with our components and forms. Also we replaced the outdated `Autocomplete` component with the new combobox.

Co-authored-by: Konstantin Schaper <konstantin.schaper@cloudogu.com>

Reviewed-by: Florian Scholdei <florian.scholdei@cloudogu.com>

scm-ui/ui-components/src/UserGroupAutocomplete.tsx

@@ -39,6 +39,12 @@ type Props = AutocompleteProps & {
   placeholder: string;
 };
 
+/**
+ * @deprecated
+ * @since 2.45.0
+ *
+ * Use {@link Combobox} instead
+ */
 const UserGroupAutocomplete: FC<Props> = ({ autocompleteLink, valueSelected, ...props }) => {
   const loadSuggestions = useSuggestions(autocompleteLink);