Specify a default launch screen for iOS Asteroids

packages/flutter/example/game/BUILD.gn

@@ -16,9 +16,10 @@ sky_app("game") {
     ]
   } else if (is_ios) {
     info_plist = "ios/Info.plist"
-    launcher_icons = [
+    launcher_resources = [
       "assets/Icon.png",
       "assets/Icon@2x.png",
+      "ios/LaunchScreen.storyboardc",
     ]
   }
 }

packages/flutter/example/game/ios/Info.plist

@@ -15,6 +15,9 @@
   <key>CFBundleDisplayName</key>
   <string>Asteroids</string>
 
+  <key>UILaunchStoryboardName</key>
+  <string>LaunchScreen</string>
+
   <key>CFBundleIdentifier</key>
   <string>org.domokit.sky.game</string>