Add window default size

IceCubesApp/App/Main/IceCubesApp+Scene.swift

@@ -49,6 +49,11 @@ extension IceCubesApp {
         }
         .withModelContainer()
     }
+    #if targetEnvironment(macCatalyst)
+    .defaultSize(width: userPreferences.showiPadSecondaryColumn ? 1100 : 800, height: 1400)
+    #elseif os(visionOS)
+    .defaultSize(width: 800, height: 1200)
+    #endif
     .commands {
       appMenu
     }