Support Objective-C code in App Resources for iOS applications

[KristianDD]

Environment
Provide version numbers for the following components (information can be retrieved by running tns info in your project folder or by inspecting the package.json of the project):

• CLI: next
• Cross-platform modules: 5.1.2
• iOS Runtime: 5.1.1

Describe the bug

After build the native classes in the Objective-C files inside App Resources are not available for use in the application.

To Reproduce

Download sample project and then use tns run ios.

Expected behaviour
To be able to use the native classes defined in the Objective-C files inside App Resources.

Sample project
testSrc.zip
When you run the project, click the "Tap" button and CONSOLE LOG file:///app/main-view-model.js:18:20: Hey! log should appear.

Additional context

Additionally, please verify that after removing ...app/App_Resources/iOS/src the project will rebuild and deploy successfully (it is expected that the application will crash if the button is clicked).

[rosen-vladimirov]

NOTE: You can place your Objective-C code in <path to App_Resources/iOS/src directory.