Ability to filter the whole dashboard using the graph legends/metrics

<!-- Please only use this template for submitting feature requests --> **What would you like to be added**: We would like to have the possibility to filter the Dashboard by clicking on a legend or metric. This is already donde with the table panel. **Why is this needed**: Many Graphing tools as PoweBI allows to filter the dashboard by clicking on the metrics. This is much more easier for the end user.