* Add support for ad-hoc filtering in dashboards * Add tests * Add documentation * Update docs/sources/variables/variable-types/add-ad-hoc-filters.md Co-authored-by: achatterjee-grafana <70489351+achatterjee-grafana@users.noreply.github.com> * Remove unused import * Refactor and simplify Co-authored-by: achatterjee-grafana <70489351+achatterjee-grafana@users.noreply.github.com>