Refactored mac titlebar options

v2/pkg/options/mac/mac.go

@@ -0,0 +1,16 @@
+package mac
+
+// Options ae options speific to Mac
+type Options struct {
+	TitleBar *TitleBar
+}
+
+// TitleBar contains options for the Mac titlebar
+type TitleBar struct {
+	TitlebarAppearsTransparent bool
+	HideTitle                  bool
+	HideTitleBar               bool
+	FullSizeContent            bool
+	UseToolbar                 bool
+	HideToolbarSeparator       bool
+}