Added better statistics calculation and active user messurement

Moonlight/App/Helpers/AvgHelper.cs

@@ -0,0 +1,39 @@
+using Moonlight.App.Database.Entities;
+
+namespace Moonlight.App.Helpers;
+
+public static class AvgHelper
+{
+    public static StatisticsData[] Calculate(StatisticsData[] data, int splitSize = 40)
+    {
+        if (data.Length <= splitSize)
+            return data;
+
+        var result = new List<StatisticsData>();
+
+        var i = data.Length / (float)splitSize;
+        var pc = (int)Math.Round(i);
+
+        foreach (var part in data.Chunk(pc))
+        {
+            double d = 0;
+            var res = new StatisticsData();
+
+            foreach (var entry in part)
+            {
+                d += entry.Value;
+            }
+
+            res.Chart = part.First().Chart;
+            res.Date = part.First().Date;
+
+            if (d == 0)
+                res.Value = 0;
+
+            res.Value = d / part.Length;
+            result.Add(res);
+        }
+
+        return result.ToArray();
+    }
+}