Create dataset

- Our dataset will contain 25+ classes and 5+ restrictions
- Current goal (can be extended later): visualize the crossreference between city and energy-label.
- Resources: use the following data from the existing dataset: (Achterhoek, Noord-Holland en Zuid-Holland)
       o Zip-code
       o Energy-label
       o City-name
       o Number of the house
       o Certificate (link)