Support resemble tts (#1322)

* support resemble tts

* update speech utils version

lib/session/call-session.js

@@ -1146,6 +1146,13 @@ class CallSession extends Emitter {
             options: credential.options
           };
         }
+        else if ('resemble' === vendor) {
+          return {
+            api_key: credential.api_key,
+            resemble_tts_use_tls: credential.resemble_tts_use_tls,
+            resemble_tts_uri: credential.resemble_tts_uri,
+          };
+        }
         else if ('inworld' === vendor) {
           return {
             api_key: credential.api_key,