@petebacondarwin deserves credit for most of this commit.
This allows you to specify a regex and serializer function instead
of the path DSL in your route declaration.
```
@RouteConfig([
{ regex: '[a-z]+.[0-9]+',
serializer: (params) => `{params.a}.params.b}`,
component: MyComponent }
])
class Component {}
```
Closes#7325Closes#7126
Alex Eagle
Alexander Bachmann
Brian Ford
Julie Ralph