Feature - Add ConfigProvider

[jakejohns]

Q	A
New Feature	yes

Description

Add a ConfigProvider and package config that will map PSR-17 HTTP Factory interfaces to the Diactoros implementations when used with compatible container implementation.

Example:

$responseFactory = $container->get(\Psr\Http\Message\ResponseFactoryInterface::class);

Allows, for example, Request Handler factories to request interfaces from the container. eg:

declare(strict_types=1);

namespace My\Module\Handler;

use Psr\Container\ContainerInterface;
use Psr\Http\Message\ResponseFactoryInterface;

class FooHandlerFactory
{
    public function __invoke(ContainerInterface $container) : FooHandler
    {
        return new FooHandler(
            $container->get(ResponseFactoryInterface::class)
        );
    }
}