Fix 90% of app's lag after selecting an item + added a debug activity + reorganized app classes (pushed to experimental branch)

Author: grimmthejow

LICENSE

@@ -1,6 +1,6 @@
 <manifest    xmlns:android="http://schemas.android.com/apk/res/android">    <uses-permission android:name="android.permission.INTERNET" />    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />    <uses-permission android:name="android.permission.READ_MEDIA_AUDIO" />    <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />    <uses-permission android:name="android.permission.FOREGROUND_SERVICE_DATA_SYNC" />    <uses-permission android:name="android.permission.FOREGROUND_SERVICE_MEDIA_PLAYBACK" />
     <uses-permission android:name="android.permission.POST_NOTIFICATIONS" />    <application        android:name=".application.XApplication"        android:allowBackup="true"        android:icon="@mipmap/ic_launcher"        android:label="@string/app_name"
-        android:appCategory="audio"        android:requestLegacyExternalStorage="true"        android:usesCleartextTraffic="true"        android:enableOnBackInvokedCallback="true"        android:theme="@style/AppTheme">        <activity            android:name=".MainActivity"            android:configChanges="orientation|screenSize|keyboardHidden|smallestScreenSize|screenLayout"            android:hardwareAccelerated="true"            android:supportsPictureInPicture="true"            android:screenOrientation="portrait"
+        android:appCategory="audio"        android:requestLegacyExternalStorage="true"        android:usesCleartextTraffic="true"        android:enableOnBackInvokedCallback="true"        android:theme="@style/AppTheme">        <activity            android:name=".activity.MainActivity"            android:configChanges="orientation|screenSize|keyboardHidden|smallestScreenSize|screenLayout"            android:hardwareAccelerated="true"            android:supportsPictureInPicture="true"            android:screenOrientation="portrait"
             android:theme="@style/AppTheme"
             android:windowSoftInputMode="adjustResize"
             android:exported="true">
@@ -15,4 +15,9 @@
             android:theme="@style/AppTheme"
             android:windowSoftInputMode="adjustPan"
             android:exported="true">
-        </activity>        <uses-library            android:name="org.apache.http.legacy"            android:required="false" />        <service            android:name="com.xapps.media.xmusic.service.PlayerService"            android:enabled="true"            android:exported="true"            android:foregroundServiceType="mediaPlayback">            <intent-filter>                <action                    android:exported="true"                    android:name="android.intent.action.MEDIA_BUTTON" />            </intent-filter>        </service>        <receiver            android:name="androidx.media3.session.MediaButtonReceiver"            android:exported="true">            <intent-filter>                <action android:name="android.intent.action.MEDIA_BUTTON" />            </intent-filter>        </receiver>    </application></manifest>
+        </activity>
+        <activity            android:name=".activity.WelcomeActivity"            android:configChanges="orientation|screenSize|keyboardHidden|smallestScreenSize|screenLayout"            android:hardwareAccelerated="true"            android:supportsPictureInPicture="true"            android:screenOrientation="portrait"
+            android:theme="@style/AppTheme"
+            android:windowSoftInputMode="adjustPan"
+            android:exported="true">
+        </activity>            <uses-library            android:name="org.apache.http.legacy"            android:required="false" />        <service            android:name="com.xapps.media.xmusic.service.PlayerService"            android:enabled="true"            android:exported="true"            android:foregroundServiceType="mediaPlayback">            <intent-filter>                <action                    android:exported="true"                    android:name="android.intent.action.MEDIA_BUTTON" />            </intent-filter>        </service>        <receiver            android:name="androidx.media3.session.MediaButtonReceiver"            android:exported="true">            <intent-filter>                <action android:name="android.intent.action.MEDIA_BUTTON" />            </intent-filter>        </receiver>    </application></manifest>