conf: add config files to module directories

The idea here is that the config files in the module directories will
serve as the canonical documentation of all module configuration
options.

src/mod/applications/mod_vmd/scripts/vmd.js

@@ -0,0 +1,27 @@
+function onInput(s, type, obj, arg)
+{
+	try
+	{
+		if(type == "dtmf")
+		{
+			console_log("info", "DTMF digit: "+s.name+" ["+obj.digit+"] len ["+obj.duration+"]\n");
+		}
+		else if(type == "event" && session.getVariable("vmd_detect") == "TRUE")
+		{
+			console_log("info", "Voicemail Detected\n");
+		}
+		
+	}
+	catch(e)
+	{
+		console_log("err", e + "\n");
+	}
+	return true;
+}
+
+session.answer();
+session.execute("vmd", "start");
+while(session.ready())
+{
+	session.streamFile(argv[0], onInput);
+}

src/mod/applications/mod_vmd/scripts/vmd.lua

@@ -0,0 +1,17 @@
+local human_detected = false;
+local voicemail_detected = false;
+
+function onInput(session, type, obj)
+    if type == "dtmf" and obj['digit'] == '1' and human_detected == false then
+        human_detected = true;
+        return "break";
+    end
+
+    if type == "event" and voicemail_detected == false then
+        voicemail_detected = true;
+        return "break";
+    end
+end
+
+session:setInputCallback("onInput");
+session:execute("vmd","start");