Adding CODEOWNERS Communication NetworkTraversal
# PRLabel: %Communication - Identity
/sdk/communication/azure-communication-identity/ @Azure/acs-identity-sdk @petrsvihlik @AikoBB @maximrytych-ms @martinbarnas-ms
+# PRLabel: %Communication - NetworkTraversal
+/sdk/communication/azure-communication-networktraversal/ @ajpeacock0 @nathpete-msft
+
# PRLabel: %Communication - Common
/sdk/communication/**/_shared/ @Azure/acs-identity-sdk @petrsvihlik @AikoBB @maximrytych-ms @martinbarnas-ms
