porting shell from nuget to local

src/Shared/Microsoft.Windows.Shell/Standard/IPropertyStore.cs

@@ -0,0 +1,21 @@
+using System;
+using System.Runtime.InteropServices;
+
+namespace Standard
+{
+	[Guid("886d8eeb-8cf2-4446-8d02-cdba1dbdcf99")]
+	[InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
+	[ComImport]
+	internal interface IPropertyStore
+	{
+		uint GetCount();
+
+		PKEY GetAt(uint iProp);
+
+		void GetValue([In] ref PKEY pkey, [In] [Out] PROPVARIANT pv);
+
+		void SetValue([In] ref PKEY pkey, PROPVARIANT pv);
+
+		void Commit();
+	}
+}