This allows us to filter `IEndpointSelectorPolicy` instance based on
whether the apply to a given candidate set. This should allow us to
remove some HAXXX from MVC.
The idea here is the ESP becomes much more pay-for-play if you can
statically eliminate many of the cases where it would usually no op.
For preview one the branding is:
new thing = UseGlobalRouting/UseEndpoint
old thing = UseRouter
We're going to drop the name Dispatcher everywhere and make sure that we
position our new work as 'new and improved routing' instead of
introducing a new product/concept name.
We're not totally sure of the term Global yet, but it's what we're doing
for preview 1. Suggestions welcome for dicussion after we do the first
preview :)
Here's a code dump of the parts of the Dispatcher prototype codebase
that are needed to get us off the ground.
This first cut attempts to use part of routing where possible, and not
all of those changes will be long-lasting.
I'll leave comments through thoughout the PR for education.
Ryan Nowak
James Newton-King
Kiran Challa