feat support mod vad detect (#54)

specs.json

@@ -58,7 +58,8 @@
       "onHoldMusic": "string",
       "actionHookDelayAction": "#actionHookDelayAction",
       "sipRequestWithinDialogHook": "object|string",
-      "boostAudioSignal": "number|string"
+      "boostAudioSignal": "number|string",
+      "vad":"#vad"
     },
     "required": []
   },
@@ -946,6 +947,8 @@
     "properties": {
       "enable": "boolean",
       "voiceMs": "number",
+      "silenceMs": "number",
+      "strategy": "string",
       "mode": "number"
     },
     "required": [

test/jambonz-verb-test.js

@@ -337,6 +337,16 @@ test("validate correct verbs", async (t) => {
        }
       }
     },
+    {
+      "verb": "config",
+      "vad": {
+        "enable": true,
+        "voiceMs": 250,
+        "silenceMs": 150,
+        "strategy": "one-shot",
+        "mode": 2
+      }
+    },
     {
       "verb": "message",
       "to": "15083084809",