add macOS deps to shared libraries

Summary: Add macOS dependencies and alternative classes to the libraries that FlipperKitLayoutPlugin needs to function.

Reviewed By: priteshrnandgaonkar

Differential Revision: D27328277

fbshipit-source-id: f22d1e9f6a5415cee0bae8eaada653be5f5467b3

iOS/Plugins/FlipperKitPluginUtils/FlipperKitLayoutHelpers/FlipperKitLayoutHelpers/SKObject.mm

@@ -21,6 +21,8 @@ SKObject::SKObject(CGPoint point) {
   _actual = @{@"x" : @(point.x), @"y" : @(point.y)};
 }
 
+#if TARGET_OS_IPHONE
+
 SKObject::SKObject(UIEdgeInsets insets) {
   _actual = @{
     @"top" : @(insets.top),
@@ -30,6 +32,19 @@ SKObject::SKObject(UIEdgeInsets insets) {
   };
 }
 
+#elif TARGET_OS_OSX
+
+SKObject::SKObject(NSEdgeInsets insets) {
+  _actual = @{
+    @"top" : @(insets.top),
+    @"bottom" : @(insets.bottom),
+    @"left" : @(insets.left),
+    @"right" : @(insets.right),
+  };
+}
+
+#endif
+
 SKObject::SKObject(CGAffineTransform transform) {
   _actual = @{
     @"a" : @(transform.a),