Extension Flag API #4854

I would like to be able to..

Store boolean flags about players represented by a list of flag labels and true/false values

Is your feature request related to a problem? Please describe.

Similar to statistics, flags are difficult to represent as data in Plan.

Flags include data such as Quests quest completion, or Achievements, where a number of items has a true/false status (completed/not)

Currently easiest way to display this data is Tables, which is opaque data format to Plan. Storing flags in their own data structure would allow further data analysis, such as who has completed which things, completion percentages and such.

In order to keep track of "not recorded yet vs false" a timestamp could be used in association with providers, linking last gathered information to each player/provider pair.