android: Refactor ic_launcher.xml to drawables

src/android/app/src/main/AndroidManifest.xml

@@ -18,11 +18,11 @@
     <application
         android:name="org.yuzu.yuzu_emu.YuzuApplication"
         android:label="@string/app_name"
-        android:icon="@mipmap/ic_launcher"
+        android:icon="@drawable/ic_launcher"
         android:allowBackup="false"
         android:supportsRtl="true"
         android:isGame="true"
-        android:banner="@mipmap/ic_launcher"
+        android:banner="@drawable/ic_launcher"
         android:extractNativeLibs="true"
         android:fullBackupContent="@xml/data_extraction_rules"
         android:dataExtractionRules="@xml/data_extraction_rules_api_31">

src/android/app/src/main/java/org/yuzu/yuzu_emu/utils/StartupHandler.kt

@@ -35,7 +35,7 @@ object StartupHandler {
             val alert = MaterialAlertDialogBuilder(parent)
                 .setMessage(Html.fromHtml(parent.resources.getString(R.string.app_disclaimer)))
                 .setTitle(R.string.app_name)
-                .setIcon(R.mipmap.ic_launcher)
+                .setIcon(R.drawable.ic_launcher)
                 .setPositiveButton(android.R.string.ok, null)
                 .setOnDismissListener {
                     handleStartupPromptDismiss(parent)