Allow arrays to be resolved as empty

[FodderMK]

I wasn't too sure about this one but wanted to make a pull request for it anyway. With the current implementation of Adic the following code causes a InjectorException: Interface "TestGameRoot+IMockInterface" cannot be instantiated. exception:

using Adic;

public class TestGameRoot : ContextRoot {
	[Inject] private IMockInterface[] Test;

	public override void SetupContainers()	{
		var container = this.AddContainer<InjectionContainer>();
		container.resolutionMode = ResolutionMode.ALWAYS_RESOLVE;
		container.Bind<IMockInterface>().ToNamespace("", true);
		this.Inject();
	}

	public override void Init() {}

	public interface IMockInterface {}
}

I understand the reasoning behind the error but I feel that in this situation the end result for the Test property should be an empty array (ie: private IMockInterface[] Test = new IMockInterface[0]) This would fulfill the ALWAYS_RESOLVE requirement (I have a property that has been resolved) while still fitting in with my configuration (no IMockInterface classes defined). This pull request accomplishes that functionality.

This situation has come up because I have platform-specific classes bound to IMockInterface, and in some cases the platform doesn't need an IMockInterface definition. Currently I need to create a fake class like public class NullClass : IMockInterface to have my game run and that doesn't seem correct.

If you would like more details let me know.

[FodderMK]

Tweaked solution to check for the specific case of the property being an array of interfaces.

[intentor]

Hello, @FodderMK!

I do think your solution is very neat! That was a case I've never run into, however I believe is something to be addressed.

Thank you! :D