Calculate LCZ using any type of RSU

[j3r3m1]

A discussion has started about this topic (see #961).

In this discussion, two options are proposed. In the first option, we might solve the problem of the loop by making as parameter the number of relations kept between a building and the RSU (an endless number would be suitable in the case of RSU being buffer circles around meteorological stations).

In the second option, we could add a new parameter to the workflow to specify that the LCZ should be calculated using the exact method for indicator calculation. However, it will work only when the possibility of using its own data in GeoClimate will be coded (since RSU will then be provided by the user...).