Introduce a new callback function to get client's UUID

Bug: 247124878
Test: compilation and manual test
Change-Id: I96b386fc232c4f65615858cf9b65317ae5bdc499
diff --git a/contexthub/aidl/Android.bp b/contexthub/aidl/Android.bp
index a0315d0..cf10529 100644
--- a/contexthub/aidl/Android.bp
+++ b/contexthub/aidl/Android.bp
@@ -49,6 +49,6 @@
         },
 
     ],
-    frozen: true,
+    frozen: false,
 
 }