F 220

Summary

Fix for #220 (closed) and #223 (closed)

Focus

• Class SetFieldStrategy is being renamed to SerializeFieldStrategy in order to avoid setters and getters with awkward names: SetSetFieldStrategy and GetSetFieldStrategy.
• New special strategy for serializing entities in the case that the client is not permitted to retrieve an entity.
• The SerializeFieldStrategy is also used in the CaosdbToGrpc Helper class now. This is the actual bug fix! Prior to this, the entities would be serialized to Protobuf without any mechanism to prevent all the fields (i.e. the id, name, parents, properties...) from being serialized. This was planned anyways (because this is part of the implementation for SELECT query responses) but it didn't occur to me that this is already needed for normal retrievals.

Test Environment

For #220 (closed)

• Please test this manually with the cfaed wiki.
• It is currently not possible to test this with cppinttest (due to a lack of ACM implementation).
• Unit tests are included here

For #223 (closed)

• See caosdb-pyinttest!31 (merged)

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