Add multi-target extension patterns to the .addins files

Author: CharliePoole

choco/nunit.choco.addins

@@ -1 +1,5 @@
+# Extensions built for a single runtime target
 ../../nunit-extension-*/tools/     # find extensions installed under chocolatey
+
+# Extensions built for multiple targets
+../../nunit-extension-*/tools/*/   # find extensions installed under chocolatey

nuget/runners/nunit.console.nuget.addins

@@ -1,6 +1,11 @@
+# Extensions built for a single runtime target
 ../../NUnit.Extension.*/**/tools/        # nuget v2 layout
 ../../../NUnit.Extension.*/**/tools/     # nuget v3 layout
-../../../../NUnit.Extension.*/**/tools/
 ../../nunit.extension.*/**/tools/        # nuget v2 layout
 ../../../nunit.extension.*/**/tools/     # nuget v3 layout
-../../../../nunit.extension.*/**/tools/
+
+# Extensions built for multiple targets
+../../NUnit.Extension.*/**/tools/*/      # nuget v2 layout
+../../../NUnit.Extension.*/**/tools/*/   # nuget v3 layout
+../../nunit.extension.*/**/tools/*/      # nuget v2 layout
+../../../nunit.extension.*/**/tools/*/   # nuget v3 layout