add element degreeOfEstablishment and pathway (with their controlled vocabularies)

[gdadade]

In order to flag cultivated/captivated specimens as such it is highly recommended to use the appropriate dwc fields in ABCD too instead of inventing new ones. It will enable the use of e.g. "PreservedSpecimen" and "MaterialSample" as recordBasis for preserved material collected in an ex situ environment, such as a Zoo or Botanic Garden.

https://dwc.tdwg.org/terms/#dwc:degreeOfEstablishment with controlled vocabulary: https://dwc.tdwg.org/doe/
examples: cultivated, captivated

https://dwc.tdwg.org/terms/#dwc:pathway with controlled vocabulary: https://dwc.tdwg.org/pw/
examples: "botanic garden/zoo/aquaria (excluding domestic aquaria)", "conservation or wildlife management"