Enhancements
Add the following resource endpoints
- /document-types/ - GET
- /document-types/<type_id>/ - GET
- /admin/document-types/ - GET, POST
- /admin/document-types/<type_id>/ - GET, PATCH, PUT, DELETE
- /groups/<group_id>/tiers/<tier_id>/requirement-sets/ - GET
- /groups/<group_id>/tiers/<tier_id>/requirement-sets/<set_id>/ - GET
- /admin/groups/<group_id>/tiers/<tier_id>/requirement-sets/ - GET, POST
- /admin/groups/<group_id>/tiers/<tier_id>/requirement-sets/<set_id>/ - GET, PATCH, PUT, DELETE
- /groups/<group_id>/tiers/<tier_id>/requirement-sets/<set_id>/items/ - GET
- /groups/<group_id>/tiers/<tier_id>/requirement-sets/<set_id>/items/<item_id>/ - GET
- /admin/groups/<group_id>/tiers/<tier_id>/requirement-sets/<set_id>/items/ - GET, POST
- /admin/groups/<group_id>/tiers/<tier_id>/requirement-sets/<set_id>/items/<item_id>/ - GET, DELETE