[Logging] Add spec for log levels

Add spec for log levels, to allow these to be passed at run-time
in order to suppress logging during normal use. WTD-793.

platform/framework/src/LogLevel.js

@@ -0,0 +1,14 @@
+/*global define*/
+
+define(
+    [],
+    function () {
+        "use strict";
+
+        function LogLevel() {
+
+        }
+
+        return LogLevel;
+    }
+);