Convert form to use DDF/React and API - parent issue https://github.com/ManageIQ/manageiq-ui-classic/issues/6825 **Location**: Services/Catalogs **Form**: Add new button **current type**: Ruby **API state**: Done: using Api for custom buttons **PM Input**: 3 - High **imported status**: NOT ASSIGNED **Missing components**: * [icon selector](https://github.com/ManageIQ/manageiq-ui-classic/issues/6836) * [attribute value pairs](https://github.com/ManageIQ/manageiq-ui-classic/issues/6834)