CompanionDeviceManager

This introduces an API for apps that support companion devices to provide a
more streamlined flow for pairing and setting up the device

Bug: 30932767
Test: Using a toy app, invoke the newly introduced API (CompanionDeviceManager),
 and go through the flow. Ensure filtering works, and device is returned to
 the calling app. Ensure the calling app can pair to the selected device.
Change-Id: I0aeb653afd65e4adead13ea9c7248ec20971b04a
diff --git a/core/res/AndroidManifest.xml b/core/res/AndroidManifest.xml
index 11eb47b..a6e43ff 100644
--- a/core/res/AndroidManifest.xml
+++ b/core/res/AndroidManifest.xml
@@ -2365,6 +2365,11 @@
     <permission android:name="android.permission.BIND_PRINT_SPOOLER_SERVICE"
         android:protectionLevel="signature" />
 
+    <!-- Must be required by the CompanionDeviceManager to ensure that only the system can bind to it.
+         @hide -->
+    <permission android:name="android.permission.BIND_COMPANION_DEVICE_MANAGER_SERVICE"
+        android:protectionLevel="signature" />
+
     <!-- @SystemApi Must be required by the RuntimePermissionPresenterService to ensure
          that only the system can bind to it.
          @hide -->