support async component, see: https://eslint.vuejs.org/user-guide/#how-to-use-a-custom-parser
Co-authored-by: kolaente <k@knt.li> Reviewed-on: vikunja/frontend#620 Co-authored-by: konrad <konrad@kola-entertainments.de> Co-committed-by: konrad <konrad@kola-entertainments.de>