support houndify stt (#108)

* support houndify stt

* add testcase

* wip

test/jambonz-verb-test.js

@@ -279,6 +279,54 @@ test("validate correct verbs", async (t) => {
         }
       },
     },
+    {
+      "verb": "gather",
+      "actionHook": "http://example.com/collect",
+      "input": ["digits", "speech"],
+      "bargein": true,
+      "dtmfBargein": true,
+      "finishOnKey": "#",
+      "numDigits": 5,
+      "timeout": 8,
+      "recognizer": {
+        "vendor": "houndify",
+        "language": "en-US",
+        "houndifyOptions": {
+          "latitude": 30.6,
+          "longitude": 30.6,
+          "city": "Huston",
+          "state": "CA",
+          "country": "US",
+          "timeZone": "GMT",
+          "domain": "Voice",
+          "audioEndpoint": "https://api.houndify.com/v1/audio",
+          "maxSilenceSeconds": 5,
+          "maxSilenceAfterFullQuerySeconds": 3,
+          "maxSilenceAfterPartialQuerySeconds": 2,
+          "vadSensitivity": 0.5,
+          "vadTimeout": 1000,
+          "vadMode": "auto",
+          "vadVoiceMs": 250,
+          "vadSilenceMs": 500,
+          "vadDebug": true,
+          "audioFormat": "PCM16",
+          "enableNoiseReduction": true,
+          "enableProfanityFilter": false,
+          "enablePunctuation": true,
+          "enableCapitalization": true,
+          "confidenceThreshold": 0.7,
+          "enableDisfluencyFilter": true,
+          "maxResults": 5,
+          "enableWordTimestamps": true,
+          "maxAlternatives": 3,
+          "partialTranscriptInterval": 100,
+          "sessionTimeout": 30000,
+          "connectionTimeout": 5000,
+          "customVocabulary": ["jambonz", "telephony", "voip"],
+          "languageModel": "enhanced"
+        }
+      },
+    },
     {
       "verb": "gather",
       "actionHook": "http://example.com/collect",