chore: 保持构建时android图标资源不被剥离

android/app/src/main/AndroidManifest.xml

@@ -231,18 +231,18 @@
             android:foregroundServiceType="mediaPlayback"
             android:exported="true" 
             tools:ignore="Instantiatable">
-        <intent-filter>
-            <action android:name="android.media.browse.MediaBrowserService" />
-        </intent-filter>
+            <intent-filter>
+                <action android:name="android.media.browse.MediaBrowserService" />
+            </intent-filter>
         </service>
 
         <receiver 
             android:name="com.ryanheise.audioservice.MediaButtonReceiver"
             android:exported="true" 
             tools:ignore="Instantiatable">
-        <intent-filter>
-            <action android:name="android.intent.action.MEDIA_BUTTON" />
-        </intent-filter>
+            <intent-filter>
+                <action android:name="android.intent.action.MEDIA_BUTTON" />
+            </intent-filter>
         </receiver> 
         <!-- Don't delete the meta-data below.
              This is used by the Flutter tool to generate GeneratedPluginRegistrant.java -->

android/app/src/main/res/raw/keep.xml

@@ -0,0 +1,3 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources xmlns:tools="http://schemas.android.com/tools"
+  tools:keep="@drawable/*" />