Add http.route span metadata

[shoppingjaws]

Want:
To improve observability, I would like to output span's http.route information as metadata.

example:
When this request is received, I want this span to be granted.
request:
/api/users/123456
span:
/api/users/:id

[valerauko]

Depends on the router so this will have to be configurable

reitit: request :reitit.core/match :template
compojure: request :compojure/route

reitit also has an option to disable injecting the match (for performance reasons), so it should be made possible to manually inject the route template somehow and tell sleepydog where to look