Take into account identifier aliases #71

The Data-Dictionary now introduced alias names for identifiers (see iterorganization/IMAS-Data-Dictionary#133, iterorganization/IMAS-Data-Dictionary#149 and example in https://imas-data-dictionary--149.org.readthedocs.build/en/149/generated/identifier/materials_identifier.html) for improving backward compatibility when introducing new names or fixing wrong names.

It would be nice that IMAS-Python API that handles identifiers (https://imas-python.readthedocs.io/en/stable/identifiers.html) would make use of the alias information. The expected behavior if one specifies an identifier by using an old alias name would be to store information about the current name. Also when comparing identifiers, it shall match whether the stored name is the current one or one of the aliases.