update codeowners to reflect new media track 2 owners
# PRLabel: %Tables
/sdk/tables/ @seankane-msft
+# PRLabel: %Media
+/sdk/media/ @naiteeks @bennage @giakas
+
# Smoke Tests
/common/smoketest/ @lmazuel @chlowell @annatisch @rakshith91 @shurd @southpolesteve
