Add iOS backend support

[czyzby]

• Include iOS platform.
• Add iOS-specific libraries.
• Include iOS launchers in project templates.
• Include RoboVM version in advanced settings.

[czyzby]

@kotcrab Can you test this?

[kotcrab]

It imported into IDEA fine on Windows. I guess I can't test anything more on Windows, right?

@intrigus could you help us test project generation on Mac?

[czyzby]

I don't think so, no. At least you can import/modify it on Windows and Linux without any problems, that's something.

[intrigus]

Everything works fine via Eclipse and cli.
@czyzby Could you (as an exchange) have a look at libgdx/libgdx#4084 ?

[czyzby]

Great, thanks.

Do you want to me to test this or do a code review? I cannot merge it into the main repo (obviously), and I'm pretty sure there's not much difference between, say, Chrome on Windows and on Linux. I've looked through the code and have some minor suggestions, but it generally looks fine.

[czyzby]

Since the generated projects are pretty much the same as the ones from the official gdx-setup and iOS project was tested, I'm closing this issue for now. Don't hesitate to comment/reopen if there are any bugs in the RoboVM project generation.

[intrigus]

@czyzby Thanks for you review and your 👍 on the issue :)

Waiting for MOE support :)

[czyzby]

You can watch the progress in #27. I want to include some checks if MOE is properly installed, but - unfortunately - there's no Linux support yet, so I might have to leave this one for @kotcrab or set up a VM. This might take a while (~week?).

[czyzby]

libgdx/libgdx#3866