Generic Business Partner: Add Housenumber Supplement

[nicoprow]

The Street obejct should be extended with an additonal field in all data models (generic as well as LSA):

Name: houseNumberSupplement
Type: String
OpenApi Description: The alphanumeric identifier representing the exact location of a business partner in a building.
Note this information might be further detailed out semantically in the building, floor, and door attributes. However, this attribute is the only relevant for addressing the business partner.