Average Total Level - Suggestion: Option to display average XP

[Koslas1]

I think it would we cool if we could see our average XP when hovering over the Total Level, which displays our current total xp.

If possible to be able to add a config option to enable average XP, and when enabled, have on the following line under Total XP, show your average XP

For example when hovering over my Total Level have it show

Total XP: 215,966,145
Average XP: 8,998,589.38 (With decimals removed if the config option for using decimals in average level is disabled)

[SamuelDev]

I like this idea but won't have the time to implement it for awhile. If you're up for trying I will accept a PR that has it working.