Also allow batch type operations in NGSI attribute-based authorization modes

[dwendland]

When evaluating the policy parameters from NGSI requests, currently only the basic CRUD operations GET, POST, PATCH and DELETE are allowed.

This should be extended to also allow the batch type operations like /entityOperations/create or /entityOperations/upsert for NGSI-LD requests.

This also applies for the evaluation of NGSI-v2 requests implemented in #18 .

This should be changed in the utility module implemented in #16 .