Map blackmarket-v1.0.json

[pveeckhout]

https://github.com/EDCD/EDDN/blob/master/schemas/blackmarket-v1.0.json

map the blackmarket EDDN message to POJO conform to CommodityV3

[jakaarl]

@pveeckhout is this actually something that is needed? From the schema:

This schema is deprecated. The same data has been made available via the prohibited array in the commodity schema since September 2017.

Also, the samples do not include one of these, either.

[jakaarl]

NVM. The word on the street is that these messages do get sent occasionally. I guess there are apps out there that haven't been updated?