win32: add Windows 10 compatibility GUID

This suppresses the Program Compatibility Assistant on Windows 10. mpv
is regularly tested on Windows 10, so this should be okay.

osdep/mpv.exe.manifest

@@ -24,6 +24,8 @@
     </trustInfo>
     <compatibility xmlns="urn:schemas-microsoft-com:compatibility.v1">
         <application>
+            <!-- Windows 10 -->
+            <supportedOS Id="{8e0f7a12-bfb3-4fe8-b9a5-48fd50a15a9a}"/>
             <!-- Windows 8.1 -->
             <supportedOS Id="{1f676c76-80e1-4239-95bb-83d0f6d0da78}"/>
             <!-- Windows 8 -->