Set MacOS app category.

Author: dainnilsson

macos/Runner/Info.plist

@@ -20,6 +20,8 @@
 	<string>$(FLUTTER_BUILD_NAME)</string>
 	<key>CFBundleVersion</key>
 	<string>$(FLUTTER_BUILD_NUMBER)</string>
+	<key>LSApplicationCategoryType</key>
+	<string>public.app-category.utilities</string>
 	<key>LSMinimumSystemVersion</key>
 	<string>$(MACOSX_DEPLOYMENT_TARGET)</string>
 	<key>NSHumanReadableCopyright</key>