Create MEDIA_ROUTING_CONTROL app op permission for proxy routing

The new permission allows holders of COMPANION_DEVICE_WATCH to use
MediaRouter2 to control the routing of other apps from the watch.
Users will grant the permission from a Special App Access setting.

Bug: 305919655
Bug: 192657812
Test: atest CtsMediaBetterTogetherTestCases
Change-Id: I204ddbf545c3e8952bd6bec1ef86bffadbe58cbd
diff --git a/packages/Shell/AndroidManifest.xml b/packages/Shell/AndroidManifest.xml
index 10d04d3..c7e5bf9 100644
--- a/packages/Shell/AndroidManifest.xml
+++ b/packages/Shell/AndroidManifest.xml
@@ -668,6 +668,7 @@
 
     <!-- Permission required for CTS test - SystemMediaRouter2Test -->
     <uses-permission android:name="android.permission.MEDIA_CONTENT_CONTROL" />
+    <uses-permission android:name="android.permission.MEDIA_ROUTING_CONTROL" />
     <uses-permission android:name="android.permission.MODIFY_AUDIO_ROUTING" />
 
     <!-- Permission required for CTS test - SoundDoseHelperTest -->