Ability to configure the URL routing engine

[Archmonger]

Currently is impossible to hijack idom-router internals to utilize something like Django's URL routing schema.

We need some kind of way of configuring this behavior.

For example, within idom-router.conf perhaps there is a global called ROUTING_ENGINE: Callable.

The interface for this callable is up for debate.

[Archmonger]

Here is Django's URL Resolver.

It has a check() method that determines one URL match out of a list of URLs (django.urls.path or django.urls.re_path) contained in self.url_patterns.

[rmorshea]

I drafted up a PR anticipating some upstream changes.

Django would use this RoutePattern class to implement the route compiler interface:

def compile_django_route(path: str) -> idom_router.CompiledPath:
    django_route = RoutePattern(path)
    return CompiledPath(django_route.regex, {k, v.to_python for k, v in django_route.converters.items()})

[Archmonger]

I will implement that router functionality within django-idom when the idom-router scaffolding is merged.