grades and statistics

[Beta-Way]

There's now a “quarter” with grades for the whole year, so some features on this period like graphs or score streaks don't work on it yet.
Profile statistics are also available (may be changed when better data becomes available in further development).

[Truiteseche]

Thanks a lot for your contribution @Beta-Way!
Berfore we merge your PR, would you just mind to display the stats in a dedicated BottomSheet or PopUp that is triggered when the "Statistiques" button is clicked ? Because the space you have used was reserved for a kind of resume of badges obtained throughout the year (not developed now but incoming). Do you want me to do this or do you wanna give it a try?

[Beta-Way]

hi @Truiteseche! Is it done or do i have to or still have to work on it, sorry for my late reply i was unavailable.