Support Func<> resolution

[pakrym]

No description provided.

[MitchRazga]

@pakrym Is this complete but just not published?

Played around with this branch earlier and Func<> resolution seemed to work as expected. Tests were passing too.

[MitchRazga]

Did run into one issue when multiple constructors use implicit funcs it will always choose the first one defined even if the service is not registered/optional. eg.

using Jab;
using System.Diagnostics;

internal class Program
{
	private static void Main(string[] args)
	{
		using Services services = new();
		IProvider<bool> provider = services.GetService<IProvider<bool>>();
	}
}

[ServiceProvider]
[Singleton(typeof(IProvider<>), typeof(Provider<>))]
//[Singleton(typeof(IService1<>), typeof(Service1<>))]
[Singleton(typeof(IService2<>), typeof(Service2<>))]
internal sealed partial class Services;

public interface IService1<T>;

public class Service1<T> : IService1<T>;

public interface IService2<T>;

public class Service2<T> : IService2<T>;

public interface IProvider<T>;

public class Provider<T> : IProvider<T>
{
	//public Provider(IService1<T> factory) => Debugger.Break();
	public Provider(Func<IService1<T>> factory) => Debugger.Break(); // Always hit even when not the best match
	//public Provider(Func<IService1<T>>? factory = null) => Debugger.Break(); // Same as above. Always hit.

	//public Provider(IService2<T> factory) => Debugger.Break();
	public Provider(Func<IService2<T>> factory) => Debugger.Break(); // Never hit unless moved above other constructors
}