chore: template rendering for loading icon (#68)

Author: darwinx64

Loader/Resources/Assets.xcassets/Loading.imageset/Contents.json

@@ -1,22 +1,15 @@
 {
   "images" : [
     {
-      "filename" : "Oval_dark 1.png",
-      "idiom" : "universal"
-    },
-    {
-      "appearances" : [
-        {
-          "appearance" : "luminosity",
-          "value" : "dark"
-        }
-      ],
       "filename" : "Oval.png",
       "idiom" : "universal"
     }
   ],
   "info" : {
     "author" : "xcode",
     "version" : 1
+  },
+  "properties" : {
+    "template-rendering-intent" : "template"
   }
 }