Add project files.

GZStudio.Tests.MSTest/Initialize.cs

@@ -0,0 +1,23 @@
+using Microsoft.Windows.ApplicationModel.DynamicDependency;
+
+[assembly: WinUITestTarget(typeof(GZStudio.App))]
+
+namespace GZStudio.Tests.MSTest;
+
+[TestClass]
+public class Initialize
+{
+    [AssemblyInitialize]
+    public static void AssemblyInitialize(TestContext context)
+    {
+        // TODO: Initialize the appropriate version of the Windows App SDK.
+        // This is required when testing MSIX apps that are framework-dependent on the Windows App SDK.
+        Bootstrap.TryInitialize(0x00010001, out var _);
+    }
+
+    [AssemblyCleanup]
+    public static void AssemblyCleanup()
+    {
+        Bootstrap.Shutdown();
+    }
+}