Add entry point to launch media output slice

Add media output panel type to launch media output slice.

Bug: 121083246
Test: make -j RunSettingsRoboTests
Change-Id: Ibf706146430e309fef6cbf0e1e86c2d5b78b50d5

src/com/android/settings/panel/PanelFeatureProvider.java

@@ -21,7 +21,7 @@ import android.content.Context;
 public interface PanelFeatureProvider {
 
     /**
-     * Returns {@link PanelContent} as specified by the {@param panelType}.
+     * Returns {@link PanelContent} as specified by the {@code panelType} and {@code packageName}.
      */
-    PanelContent getPanel(Context context, String panelType);
+    PanelContent getPanel(Context context, String panelType, String packageName);
 }