audit → credentials Relation

File in src/core/audit	Includes file in src/core/credentials
AuditFactory.hpp	CredentialFwd.hpp
CredentialEvent.cpp	Credential.hpp
CredentialEvent.cpp	serializers / PolymorphicCredentialSerializer.hpp
CredentialEvent.hpp	CredentialFwd.hpp
CredentialEvent.hpp	ICredential.hpp
ICredentialEvent.hpp	CredentialFwd.hpp