make an extension method for List.Sort that works the way

I expected it to - taking a sorting lambda

src/HexManiac.Core/HexManiac.Core.csproj

@@ -60,7 +60,7 @@
     <Compile Include="Models\PokemonModel.cs" />
     <Compile Include="Models\SearchByte.cs" />
     <Compile Include="Models\StoredMetadata.cs" />
-    <Compile Include="NumericExtensions.cs" />
+    <Compile Include="SystemExtensions.cs" />
     <Compile Include="Models\Enums.cs" />
     <Compile Include="Models\IFileSystem.cs" />
     <Compile Include="Models\LoadedFile.cs" />

src/HexManiac.Core/SystemExtensions.cs

@@ -1,12 +1,16 @@
 using System;
+using System.Collections.Generic;
 
 namespace HavenSoft.HexManiac.Core {
-   public static class NumericExtensions {
+   public static class SystemExtensions {
       public static T LimitToRange<T>(this T value, T lower, T upper) where T : IComparable<T> {
          if (upper.CompareTo(lower) < 0) throw new ArgumentException($"upper value {upper} is less than lower value {lower}");
          if (value.CompareTo(lower) < 0) return lower;
          if (upper.CompareTo(value) < 0) return upper;
          return value;
       }
+      public static void Sort<T>(this List<T> list, Func<T,T,int> compare) {
+         list.Sort(new StubComparer<T> { Compare = compare });
+      }
    }
 }

src/HexManiac.Core/ViewModels/ViewPort.cs

@@ -548,7 +548,7 @@ namespace HavenSoft.HexManiac.Core.ViewModels {
          }
 
          // reorder the list to start at the current cursor position
-         results.Sort(new StubComparer<(int start, int end)> { Compare = (x, y) => x.start.CompareTo(y.start) });
+         results.Sort((a, b) => a.start.CompareTo(b.start));
          var offset = scroll.ViewPointToDataIndex(SelectionStart);
          var left = results.Where(result => result.start < offset);
          var right = results.Where(result => result.start >= offset);