Support "percentile" values on single stat chart types
Problem to solve
Currently on our single stat charts, we only render the number provided by the query as is, no formatting options allowed
What I propose is a way for users customize the way the value renders on the single_stat chart, one way to do this is to introduce a max_value property in the dashboard yaml file the way Grafana does it. So mathematically on the chart component we would do
query_value / max_value * 100