feat: add back splash screen

react-native/android/app/src/main/res/drawable/splash_screen.xml

@@ -1,8 +1,10 @@
 <?xml version="1.0" encoding="utf-8"?>
-<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android"
+    android:gravity="center">
     <item
+        android:layout_gravity="center"
         android:width="@dimen/splash_screen_icon_size"
         android:height="@dimen/splash_screen_icon_size"
-        android:drawable="@color/ic_launcher_background"
+        android:drawable="@mipmap/ic_launcher_foreground"
         android:gravity="center" />
 </layer-list>

react-native/android/app/src/main/res/values-v31/styles.xml

@@ -6,5 +6,7 @@
         <item name="android:editTextBackground">@drawable/rn_edit_text_material</item>
         <item name="android:navigationBarColor">@android:color/white</item>
         <item name="android:windowSplashScreenAnimatedIcon">@drawable/splash_screen</item>
+        <item name="android:windowSplashScreenBackground">@android:color/white</item>
+        <item name="android:windowSplashScreenIconBackgroundColor">@android:color/white</item>
     </style>
-</resources>
+</resources>

react-native/android/app/src/main/res/values/dimens.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
     <!-- Round app icon can take all default space -->
-    <dimen name="splash_screen_icon_size">0dp</dimen>
+    <dimen name="splash_screen_icon_size">60dp</dimen>
 </resources>