shcore: Add GetFeatureEnabledState stub.

dlls/api-ms-win-core-featurestaging-l1-1-0/api-ms-win-core-featurestaging-l1-1-0.spec

-@ stub GetFeatureEnabledState
+@ stdcall GetFeatureEnabledState(long long) shcore.GetFeatureEnabledState
 @ stub RecordFeatureError
 @ stub RecordFeatureUsage
 @ stdcall SubscribeFeatureStateChangeNotification(ptr ptr ptr) shcore.SubscribeFeatureStateChangeNotification

dlls/shcore/main.c

@@ -2515,3 +2515,12 @@ void WINAPI SubscribeFeatureStateChangeNotification(FEATURE_STATE_CHANGE_SUBSCRI
 {
     FIXME("(%p, %p, %p) stub\n", subscription, callback, context);
 }
+
+/*************************************************************************
+ * GetFeatureEnabledState        [SHCORE.@]
+ */
+FEATURE_ENABLED_STATE WINAPI GetFeatureEnabledState(UINT32 feature, FEATURE_CHANGE_TIME change_time)
+{
+    FIXME("(%u, %u) stub\n", feature, change_time);
+    return FEATURE_ENABLED_STATE_DEFAULT;
+}

dlls/shcore/shcore.spec

@@ -9,7 +9,7 @@
 @ stdcall GetCurrentProcessExplicitAppUserModelID(ptr)
 @ stdcall GetDpiForMonitor(long long ptr ptr)
 @ stub GetDpiForShellUIComponent
-# @ stub GetFeatureEnabledState
+@ stdcall GetFeatureEnabledState(long long)
 # @ stub GetFeatureVariant
 @ stdcall GetProcessDpiAwareness(long ptr)
 @ stdcall GetProcessReference(ptr)