Move custom_media_packages from media/ to libs/car-media-common/

Bug: 145004856
Test: manual
Change-Id: Ib2ea6116f66284e795c5b3948faa22a4de19c7f9
diff --git a/car-media-common/res/values/config.xml b/car-media-common/res/values/config.xml
index 5cf1bc2..87d0979 100644
--- a/car-media-common/res/values/config.xml
+++ b/car-media-common/res/values/config.xml
@@ -25,4 +25,12 @@
     <string name="launcher_intent" translatable="false">
         intent:#Intent;component=com.android.car.carlauncher/.AppGridActivity;launchFlags=0x24000000;S.com.android.car.carlauncher.mode=MEDIA_ONLY;end
     </string>
-</resources>
\ No newline at end of file
+
+    <!-- A list of custom media components. Those components won't be shown
+     in the launcher because their applications' launcher activities will be
+     shown. Those components won't be opened by Media Center, and their
+     launcher activities will be launched directly instead. -->
+    <string-array name="custom_media_packages" translatable="false">
+        <item>com.android.car.radio/.service.RadioAppService</item>
+    </string-array>
+</resources>