allow gadgets to show statistics using story points instead of issue counts

This is a follow-up to GHS-4802, which was closed, but not really addressed in my opinion.

We are using Jira and Jira Agile. Our users are asking for the ability of Jira gadgets to support showing data in terms of story points instead of issue counts. For example, for whatever statistic type is chosen for a Pie Chart gadget, we would like the ability to show the total story points for each type instead of issue counts. Or for the Two Dimensional Filter Statistics gadget, there should be an option to show the data in terms of story points instead of issue counts. The idea is to show data in terms of a story point budget.

In Jira Agile, even if the estimation statistic for a board is set to Story Points, there's no agile report that can show the data we're looking for. This should have nothing to to with classic boards, which I understand that Atlassian is de-supporting.