chore: update macOS icons and add build script

Signed-off-by: TheOneWithTheBraid <the-one@with-the-braid.cf>

macos/Podfile

@@ -36,5 +36,8 @@ end
 post_install do |installer|
   installer.pods_project.targets.each do |target|
     flutter_additional_macos_build_settings(target)
+    target.build_configurations.each do |config|
+      config.build_settings.delete 'MACOSX_DEPLOYMENT_TARGET'
+    end
   end
 end