Make ncrunch run again.

.ncrunch/Avalonia.Desktop.v3.ncrunchproject

@@ -0,0 +1,5 @@
+<ProjectConfiguration>
+  <Settings>
+    <IgnoreThisComponentCompletely>True</IgnoreThisComponentCompletely>
+  </Settings>
+</ProjectConfiguration>

.ncrunch/Avalonia.net461.v3.ncrunchproject

@@ -0,0 +1,5 @@
+<ProjectConfiguration>
+  <Settings>
+    <IgnoreThisComponentCompletely>True</IgnoreThisComponentCompletely>
+  </Settings>
+</ProjectConfiguration>

Avalonia.v3.ncrunchsolution

@@ -2,6 +2,7 @@
   <Settings>
     <AdditionalFilesToIncludeForSolution>
       <Value>tests\TestFiles\**.*</Value>
+      <Value>src\Avalonia.Build.Tasks\bin\Debug\netstandard2.0\Avalonia.Build.Tasks.dll</Value>
     </AdditionalFilesToIncludeForSolution>
     <AllowParallelTestExecution>True</AllowParallelTestExecution>
     <ProjectConfigStoragePathRelativeToSolutionDir>.ncrunch</ProjectConfigStoragePathRelativeToSolutionDir>