Replicate the 'Themes' report into the 3.0 Improved experience

Problem Definition

• It's difficult to understand how much investment they put into a certain type of work. 
• The Theme report is only available in Portfolio for Jira Live plans: To view the distribution of work over different 'Themes' assigned to an issue. Broken down by Target (user defined %), Estimated (based on estimated issues assigned with 'Themes'), and Actual (distribution of 'Theme' for Completed issues).
• The 3.0 improved experience has removed Themes, opting to provide more flexibility with labels/components/custom fields for the values that Themes provided.

Suggested Solution

• Add a view / report so users can replicate the same value that was provided by 2.0's Theme report 'pie graph' (w/ Target, Estimated & Actual breakdown)
• With the removal of 'Themes' as a field in the 3.0 experience, make this flexible to be able to use labels/components/custom fields.