fix: macOS and iOS flavors (#68)

## Pull Request Description

Both macos and iOS flavors are now configured properly

## Checklist

- [x] If a new package was added, did you ensure it works for all
supported platforms? Is the package also well maintained?
- [x] Did you add localization for any text? If yes, did you sort the
.arb file using ```arb_utils sort <INPUT_FILE>```?
- [x] Check that any changes are related to the issue at hand.

---------

Co-authored-by: PartyDonut <PartyDonut@users.noreply.github.com>

macos/Runner/Assets.xcassets/developmentIcons.appiconset/Contents.json

@@ -0,0 +1,68 @@
+{
+  "images": [
+    {
+      "filename": "app_icon_16.png",
+      "idiom": "mac",
+      "scale": "1x",
+      "size": "16x16"
+    },
+    {
+      "filename": "app_icon_32.png",
+      "idiom": "mac",
+      "scale": "2x",
+      "size": "16x16"
+    },
+    {
+      "filename": "app_icon_32.png",
+      "idiom": "mac",
+      "scale": "1x",
+      "size": "32x32"
+    },
+    {
+      "filename": "app_icon_64.png",
+      "idiom": "mac",
+      "scale": "2x",
+      "size": "32x32"
+    },
+    {
+      "filename": "app_icon_128.png",
+      "idiom": "mac",
+      "scale": "1x",
+      "size": "128x128"
+    },
+    {
+      "filename": "app_icon_256.png",
+      "idiom": "mac",
+      "scale": "2x",
+      "size": "128x128"
+    },
+    {
+      "filename": "app_icon_256.png",
+      "idiom": "mac",
+      "scale": "1x",
+      "size": "256x256"
+    },
+    {
+      "filename": "app_icon_512.png",
+      "idiom": "mac",
+      "scale": "2x",
+      "size": "256x256"
+    },
+    {
+      "filename": "app_icon_512.png",
+      "idiom": "mac",
+      "scale": "1x",
+      "size": "512x512"
+    },
+    {
+      "filename": "app_icon_1024.png",
+      "idiom": "mac",
+      "scale": "2x",
+      "size": "512x512"
+    }
+  ],
+  "info": {
+    "author": "icons_launcher",
+    "version": 1
+  }
+}