Authorise actions for reparation request materials endpoints

[cyrildewit]

Description

In ticket #146 a policy has ben created for the ReparationRequestModel. The reparation request materials endpoints are currently not authorising against these actions. This needs to be added.

Technical tasks

• [x] Authorise action viewAny in index endpoint
• [x] Authorise action create in store endpoint
• [x] Authorise action view in show endpoint
• [x] Authorise action update in update endpoint
• [x] Authorise action delete in destroy endpoint
• [x] Update tests