style(assets): refresh Giftopia icons and splashes with adaptive layers

capacitor-assets.config.json

@@ -2,9 +2,9 @@
   "icon": {
     "android": {
       "adaptive": {
-        "background": "#121212",
+        "background": "resources/android/icon/icon_background.png",
-        "foreground": "resources/icon.png",
+        "foreground": "resources/android/icon/icon_foreground.png",
-        "monochrome": "resources/icon.png"
+        "monochrome": "resources/android/icon/icon_monochrome.png"
       },
       "target": "android/app/src/main/res"
     },