Fix/play timeout (#183)

* Move play timeout into jambonz

* Unnecessary await on kill + eslint

* Change call status test to be consistent

Co-authored-by: Matt Preskett <matt.preskett@netcall.com>

lib/session/call-session.js

@@ -114,6 +114,10 @@ class CallSession extends Emitter {
     return this.callInfo.applicationSid;
   }
 
+  get callStatus() {
+    return this.callInfo.callStatus;
+  }
+
   /**
    * SIP call-id for the call
    */