adding some resources for Montenegro

[Gjovani]

here are some open resources for Montenegro that could be added to the map!

cadastral maps: https://geoportal.co.me/Geoportal01/ https://geoportal.co.me/Geoportal02/

business registry: http://195.66.189.183:8083/
(something is wrong with the domain so currently it's only accessible using the IP address)