Add arguments to MiddlewareName

[rodber]

Need to support middleware arguments in the form of TheMiddleware::class:arg1,arg2 or perhaps middleware(TheMiddleware::class, pairs).

The arguments must be stored at MiddlewareName, used at Router to pass $middleware->setUp(...$args).

Middleware with arguments must implement a given interface for setUp(mixed ...$arg), where it stores the arguments at class properties available to the handle method.

Alternatively we could spawn another MiddlewareInterface which doesn't restrict parameters on handle.