flutter: android: Replace splash from burly_wood to aths_special and add icon

And add normal_background.xml

src/ui/flutter_app/android/app/src/main/res/drawable/launch_background.xml

@@ -1,12 +1,12 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!-- Modify this file to customize your launch splash screen -->
 <layer-list xmlns:android="http://schemas.android.com/apk/res/android">
-    <item android:drawable="@color/burly_wood" />
+    <item android:drawable="@color/aths_special" />
 
     <!-- You can insert your own image assets here -->
-    <!-- <item>
+    <item>
         <bitmap
             android:gravity="center"
-            android:src="@mipmap/launch_image" />
-    </item> -->
+            android:src="@mipmap/ic_launcher" />
+    </item>
 </layer-list>

src/ui/flutter_app/android/app/src/main/res/drawable/normal_background.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Modify this file to customize your launch splash screen -->
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:drawable="@color/crusoe" />
+
+    <!-- You can insert your own image assets here -->
+    <!-- <item>
+        <bitmap
+            android:gravity="center"
+            android:src="@mipmap/ic_launcher" />
+    </item> -->
+</layer-list>

src/ui/flutter_app/android/app/src/main/res/values/colors.xml

@@ -5,4 +5,5 @@
     <color name="asparagus">#769656</color>
     <color name="aths_special">#eeeed2</color>
     <color name="burly_wood">#deb887</color>
+    <color name="crusoe">#165B31</color>
 </resources>

src/ui/flutter_app/android/app/src/main/res/values/styles.xml

@@ -13,6 +13,6 @@
 
          This Theme is only used starting with V2 of Flutter's Android embedding. -->
     <style name="NormalTheme" parent="@android:style/Theme.Black.NoTitleBar">
-        <item name="android:windowBackground">@color/burly_wood</item>
+        <item name="android:windowBackground">@drawable/normal_background</item>
     </style>
 </resources>