Include item details in reservation response

Author: dmolesUC

app/controllers/reservations_controller.rb

@@ -14,7 +14,7 @@ def create
     log_headers(reservation_request_email)
     reservation_request_email.deliver_now
 
-    render jsonapi: @reservation, status: :created, location: @reservation
+    render jsonapi: @reservation, include: [:item], status: :created, location: @reservation
   end
 
   private

spec/requests/reservations_spec.rb

@@ -41,7 +41,7 @@
 
         expected_rsvn = Reservation.new(user: current_user, item: item)
 
-        expect(parsed_response).to contain_jsonapi_for(expected_rsvn)
+        expect(parsed_response).to contain_jsonapi_for(expected_rsvn, include: [:item])
       end
 
       # rubocop:disable RSpec/ExampleLength