Check in the sidecar name to jar path mapping

Note that the xml is not in the system image yet.

Flag: android.app.appfunctions.flags.enable_app_function_manager
Test: Build
Bug: 360864791
Change-Id: Ie56b4323795378ba8ff6b5b3094ad0880136c2e1
diff --git a/libs/appfunctions/Android.bp b/libs/appfunctions/Android.bp
index 09e2f42..c6cee07 100644
--- a/libs/appfunctions/Android.bp
+++ b/libs/appfunctions/Android.bp
@@ -29,3 +29,11 @@
     no_dist: true,
     unsafe_ignore_missing_latest_api: true,
 }
+
+prebuilt_etc {
+    name: "appfunctions.sidecar.xml",
+    system_ext_specific: true,
+    sub_dir: "permissions",
+    src: "appfunctions.sidecar.xml",
+    filename_from_src: true,
+}