Added Unity Config to exports

Author: jeffreylanters

source/exports.ts

@@ -1,5 +1,6 @@
 import Unity from "./components/unity";
 import UnityContext from "./models/unity-context";
+import UnityConfig from "./interfaces/unity-config";
 
 export default Unity;
-export { UnityContext };
+export { UnityContext, UnityConfig };