chore: revert src folder for ng tests app

Author: SvetoslavTsenov

Diff for: tests/webpack.config.js

@@ -37,7 +37,7 @@ module.exports = env => {
         // The 'appPath' and 'appResourcesPath' values are fetched from
         // the nsconfig.json configuration file
         // when bundling with `tns run android|ios --bundle`.
-        appPath = "src",
+        appPath = "app",
         appResourcesPath = "App_Resources",
 
         // You can provide the following flags when running 'tns run android|ios'