Improve UX for Advanced Search functionality. Mockup: <img width="736" alt="Bildschirmfoto 2023-09-04 um 13 50 04" src="https://github.com/nextcloud/server/assets/62374139/ba539ab6-3a06-4a2e-8875-15ff98f1bfe5"> [Link to Nc Vue Documentation](https://nextcloud-vue-components.netlify.app/#/Components/NcSelect)
