Dynamic theme switching and visual tweaks (#1556)

* Dynamic theme switching and visual tweaks

* update action runner to use macos-11 for iOS 15 support

* additional tweaks

* refinements

* refinements

* formatting and tweaks

src/Android/Resources/drawable/list_item_bg.xml

@@ -1,5 +1,5 @@
 <ripple xmlns:android="http://schemas.android.com/apk/res/android"
-    android:color="@color/itemPressed">
+    android:color="#8E8E93">
 
     <item
         android:id="@android:id/mask"

src/Android/Resources/drawable/list_item_bg_dark.xml

@@ -1,7 +0,0 @@
-<ripple xmlns:android="http://schemas.android.com/apk/res/android"
-    android:color="@color/dark_primary">
-
-    <item
-        android:id="@android:id/mask"
-        android:drawable="@android:color/white" />
-</ripple>

src/Android/Resources/drawable/list_item_bg_nord.xml

@@ -1,7 +0,0 @@
-<ripple xmlns:android="http://schemas.android.com/apk/res/android"
-    android:color="@color/nord_primary">
-
-    <item
-        android:id="@android:id/mask"
-        android:drawable="@android:color/white" />
-</ripple>

src/Android/Resources/drawable/splash_screen.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <layer-list xmlns:android="http://schemas.android.com/apk/res/android">
   <item>
-    <color android:color="@color/lightgray"/>
+    <color android:color="@color/white"/>
   </item>
   <item>
     <bitmap android:src="@drawable/logo_legacy" android:tileMode="disabled" android:gravity="center"/>

src/Android/Resources/drawable/switch_thumb.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="oval">
+  <solid android:color="@color/white"/>
+  <size android:width="20dp" android:height="20dp"/>
+</shape>