Feature/jwt auth (#75)

* initial changes for jwt auth

* return permissions as an array of string

* Add JWT expiration environment variable (#74)

* allow fromHost in createCall REST API

* add JWT_EXPIRES_IN=<mins> env variable, 60 mins by default

* add jwt expiration in register.js and signin.js

* fix tests - add permissions and scope to encoded obj in jwt

Co-authored-by: Dave Horton <daveh@beachdognet.com>
Co-authored-by: eglehelms <e.helms@cognigy.com>

* return only the jwt-token in the api response

Co-authored-by: EgleH <egle.helms@gmail.com>
Co-authored-by: eglehelms <e.helms@cognigy.com>

test/speech-credentials.js

@@ -50,7 +50,10 @@ test('speech credentials tests', async(t) => {
     await deleteObjectBySid(request, `/ServiceProviders/${service_provider_sid}/SpeechCredentials`, speech_credential_sid);
 
     const token = jwt.sign({
-      account_sid
+      account_sid,
+      account_sid,
+      scope: "account",
+      permissions: ["PROVISION_USERS", "PROVISION_SERVICES", "VIEW_ONLY"]
     }, process.env.JWT_SECRET, { expiresIn: '1h' });
     const authUser = {bearer: token};