Introduce WixToolsetServiceProvider

Using a service provider allows all of WixToolset.Core's internal
functionality to be abstracted behind interfaces in WixToolset.Extensibility.
The service provide can also control what interfaces are singletons.

1 files changed, 12 insertions, 0 deletions

diff --git a/src/WixToolset.Core.WindowsInstaller/StandardBackend.cs b/src/WixToolset.Core.WindowsInstaller/StandardBackend.cs
new file mode 100644
index 00000000..f1ae2017
--- /dev/null
+++ b/src/WixToolset.Core.WindowsInstaller/StandardBackend.cs
@@ -0,0 +1,12 @@
+// Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information.
+
+namespace WixToolset.Core.WindowsInstaller
+{
+    /// <summary>
+    /// Denotes this assembly contains a backend that is considered
+    /// a standard part of the WiX Toolset.
+    /// </summary>
+    public static class StandardBackend
+    {
+    }
+}