perf: implement streaming XML parsing for large folder operations

- Add StreamingReadFolderRemoteOperation for memory-efficient folder reading using SAX parser
- Add PropFindSaxHandler for streaming XML parsing of PROPFIND responses
- Prevent OutOfMemoryError for folders with thousands of files by avoiding full XML loading
- Integrate streaming parser into RefreshFolderOperation with fallback to legacy method
- Add batch processing for large folders (500 files per batch) in FileDataStorageManager
- Improve logging levels and add thread name tracking for better debugging

Author: dmiales

app/src/main/AndroidManifest.xml

@@ -118,6 +118,7 @@
         android:icon="@mipmap/ic_launcher"
         android:installLocation="internalOnly"
         android:label="@string/app_name"
+        android:largeHeap="true"
         android:manageSpaceActivity="com.owncloud.android.ui.activity.ManageSpaceActivity"
         android:memtagMode="async"
         android:networkSecurityConfig="@xml/network_security_config"