1. Added a new AttributeRouteInfo class to store all the information for
actions that are attribute routed.
2. Added a new ReflectedAttributeRouteModel class to store all the information
related to attribute routes in the ReflectedApplicationModel.
3. Refactored ReflectedControllerModel and ReflectedActionModel to use ReflectedAttributeRouteModel
instead of just the attribute route template.
4. Refactored ReflectedActionDescriptorProvider to use AttributeRouteInfo and ReflectedAttributeRouteModel
instead of just the route template.
5. Added a CombineReflectedAttributeRouteModel method in ReflectedAttributeRouteModel that handles
combining two ReflectedAttributeRouteModel instances.
6. Removed the AttributeRouteTemplate class and moved the methods for combining attribute routes to the
ReflectedAttributeRouteModel class.
7. Added unit tests for ReflectedActionModel and ReflectedControllerModel that
cover the usage of AttributeRouteInfo.
8. Added unit tests for CombineReflectedAttributeRouteModel.
This change exludes internal and nested types from being treated as
controllers. This is consistent with MVC5's behavior.
DefaultActionSelectionConventions was primarily tested through running
action selection. I wanted to also test the methods with substantial logic
in this class, so I moved a spate of a classes from private classes inside of the
integration tests to public classes so they could be shared. I also added
tests to fill gaps in DefaultActionSelectionConventions, which is the vast
vast majority of this change.