Fix System.Design ref and vsFindResults namespace

Author: Jordan Pierce

OffensiveVS360/OffensiveVS360.csproj

@@ -27,10 +27,11 @@
   </ItemGroup>
 
   <ItemGroup>
-    <!-- .NET 4.7.2 framework assemblies needed for compression and HTTP -->
+    <!-- .NET 4.7.2 framework assemblies -->
     <Reference Include="System.IO.Compression" />
     <Reference Include="System.IO.Compression.FileSystem" />
     <Reference Include="System.Net.Http" />
+    <Reference Include="System.Design" />
   </ItemGroup>
 
   <ItemGroup>

OffensiveVS360/ToolWindow/FindingsWindowControl.xaml.cs

@@ -251,7 +251,7 @@ private async Task NavigateToFindingAsync(Vulnerability v)
                 var ep = textDoc.StartPoint.CreateEditPoint();
                 var line = v.GetLineNumberInt();
                 ep.MoveToLineAndOffset(line, 1);
-                ep.TryToShow(vsFindResults.vsFindResultsNone, true);
+                ep.TryToShow(EnvDTE.vsFindResults.vsFindResultsNone, true);
 
                 var sel = textDoc.Selection;
                 sel.MoveToLineAndOffset(line, Math.Max(1, v.GetColumnNumberInt()));