[WIP] Create custom behavior for RouteNotFoundException

| Q             | A
| ------------- | ---
| Bug fix?      | no
| New feature?  | yes
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | no
| Fixed tickets | #10
| License       | MIT
| Doc PR        | need to be done

That's my starting point to work on this issue.

i guess this should be best_matches?

the idea is that we add more stuff so that a custom template can use that additional stuff?