Add MetadataObject class to encode/decode RDR-style metadata

Change-Id: I6688b630a4889614e7df5c1f91b91be370a350cd
Refs: #4707
diff --git a/AUTHORS.md b/AUTHORS.md
index 59e7e77..38fc19c 100644
--- a/AUTHORS.md
+++ b/AUTHORS.md
@@ -40,3 +40,4 @@
 * Susmit Shannigrahi    <https://www.linkedin.com/in/susmit-shannigrahi-90433b8>
 * José Quevedo          <http://atnog.av.it.pt/members/jquevedo>
 * Zhiyi Zhang           <http://irl.cs.ucla.edu/~zhiyi/>
+* Chavoosh Ghasemi      <https://www.linkedin.com/in/chavoosh-ghasemi-421327117/>