ENH: Special treatment for name property

Summary

For https://gitlab.indiscale.com/caosdb/customers/leibniz-zmt/management/-/issues/58. Simply skip name properties in json-schema datamodel definitions -- they will be identified with CaosDB's name property when actually creating records s.th. we don't need to create a separate property.

Focus

name propeties are now caught in JsonSchemaParser._treat_element.

Test Environment

Unittest should be sufficient, but feel free to test it manually, too.

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