Add statistics screens (#910)

* Add statistics screens

- New statistics dashboard with four tiles: overview, recently sung, best list per difficulty and players
- Each tile opens a detail screen with longer lists, filters (left/right) and scrolling
- Detail lists show ranks for places 1-3, avatars, bars and alternating row backgrounds
- Players can be ranked by most songs or by best average
- Overview details: most sung songs, genres, languages and songs never sung
- Navigation help at the bottom of both screens
- New Statistics button in the main menu
- English and German texts

* Address code analysis findings in statistics screens

* Retrigger CI

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Co-authored-by: Florian Ostertag <flokuep@users.noreply.github.com>

VocaluxeLib/Enums.cs

@@ -430,6 +430,8 @@ namespace VocaluxeLib
         Names,
         Credits,
         Party,
+        Statistics,
+        StatisticsDetail,
 
         CountEntry //Leave this as last entry and never use it!
     }