first app icon and theme update

ios/Runner/Assets.xcassets/AppIcon.appiconset/Contents.json

@@ -1,14 +1 @@
-{
-  "images" : [
-    {
-      "filename" : "icon_x1024.png",
-      "idiom" : "universal",
-      "platform" : "ios",
-      "size" : "1024x1024"
-    }
-  ],
-  "info" : {
-    "author" : "xcode",
-    "version" : 1
-  }
-}
+{"images":[{"size":"60x60","expected-size":"180","filename":"180.png","folder":"Assets.xcassets/AppIcon.appiconset/","idiom":"iphone","scale":"3x"},{"size":"40x40","expected-size":"80","filename":"80.png","folder":"Assets.xcassets/AppIcon.appiconset/","idiom":"iphone","scale":"2x"},{"size":"40x40","expected-size":"120","filename":"120.png","folder":"Assets.xcassets/AppIcon.appiconset/","idiom":"iphone","scale":"3x"},{"size":"60x60","expected-size":"120","filename":"120.png","folder":"Assets.xcassets/AppIcon.appiconset/","idiom":"iphone","scale":"2x"},{"size":"57x57","expected-size":"57","filename":"57.png","folder":"Assets.xcassets/AppIcon.appiconset/","idiom":"iphone","scale":"1x"},{"size":"29x29","expected-size":"58","filename":"58.png","folder":"Assets.xcassets/AppIcon.appiconset/","idiom":"iphone","scale":"2x"},{"size":"29x29","expected-size":"29","filename":"29.png","folder":"Assets.xcassets/AppIcon.appiconset/","idiom":"iphone","scale":"1x"},{"size":"29x29","expected-size":"87","filename":"87.png","folder":"Assets.xcassets/AppIcon.appiconset/","idiom":"iphone","scale":"3x"},{"size":"57x57","expected-size":"114","filename":"114.png","folder":"Assets.xcassets/AppIcon.appiconset/","idiom":"iphone","scale":"2x"},{"size":"20x20","expected-size":"40","filename":"40.png","folder":"Assets.xcassets/AppIcon.appiconset/","idiom":"iphone","scale":"2x"},{"size":"20x20","expected-size":"60","filename":"60.png","folder":"Assets.xcassets/AppIcon.appiconset/","idiom":"iphone","scale":"3x"},{"size":"1024x1024","filename":"1024.png","expected-size":"1024","idiom":"ios-marketing","folder":"Assets.xcassets/AppIcon.appiconset/","scale":"1x"}]}

ios/Runner/Assets.xcassets/LauncherIcon.imageset/Contents.json

@@ -1,17 +1,8 @@
 {
   "images" : [
     {
-      "filename" : "icon.png",
-      "idiom" : "universal",
-      "scale" : "1x"
-    },
-    {
-      "idiom" : "universal",
-      "scale" : "2x"
-    },
-    {
-      "idiom" : "universal",
-      "scale" : "3x"
+      "filename" : "Logo-Rounded.png",
+      "idiom" : "universal"
     }
   ],
   "info" : {