Import the downloader the installer uses, and package libwayland-server.so

The compositor links libwayland-server.so as an imported target, so CMake never
copies it into the apk; it has to travel in jniLibs like the PulseAudio set.

app/src/main/java/com/the412banner/steamdeck/runtime/LinuxRuntimeInstaller.java

@@ -4,6 +4,7 @@ import android.content.Context;
 import android.util.Log;
 
 
+import com.the412banner.steamdeck.core.Downloader;
 import com.the412banner.steamdeck.core.FileUtils;
 
 import org.apache.commons.compress.archivers.tar.TarArchiveEntry;