Fix API docs generation with Scramble 0.13

Scramble 0.13 moved the collected resource type of resource collections
to a different template slot, which broke the custom paginated resource
collection extension and the API docs export. Scramble now infers
paginated responses natively, so the extension, the marker interface and
the @return annotations that overrode the inference are removed.

Scramble 0.13 also documents closure routes, so the API fallback routes
are moved to a controller that is excluded from the docs.

Add a test that exports the API docs.

app/Http/Controllers/Api/V1/TimeEntryController.php

@@ -117,8 +117,6 @@ class TimeEntryController extends Controller
      * Results are paginated with `limit` (default 100, max 500) and `offset`; check `meta.total` and fetch further pages when needed.
      * To find the running timer, use `active=true` (or `GET /v1/users/me/time-entries/active`).
      *
-     * @return TimeEntryCollection<TimeEntryResource>
-     *
      * @throws AuthorizationException
      *
      * @operationId getTimeEntries