improved theming, error handling, table sort

TanksServer/Models/Scores.cs

@@ -5,4 +5,16 @@ internal sealed record class Scores(int Kills = 0, int Deaths = 0)
     public int Kills { get; set; } = Kills;
 
     public int Deaths { get; set; } = Deaths;
+
+    public double Ratio
+    {
+        get
+        {
+            if (Kills == 0)
+                return 0;
+            if (Deaths == 0)
+                return Kills;
+            return Kills / (double)Deaths;
+        }
+    }
 }