Add get_simbox_params

[oddvarlia]

Function that extracts the necessary information from a geomodel grid to create a box grid representing RMS simulation box. This can be used as input to a new version of ERT where field parameters for different zones have size equal to or larger than the RMS simulation box grid. The information is sufficient for calculating (x,y) position of each field parameter from a given zone. It will not be necessary to create a box grid representing the help grid ERTBOX in which the field parameters are saved. It is sufficient that the FIELD keyword in ERT is extended by a small input yaml file containing the information extracted from RMS simbox (but where number of layers is extended to be large enough to contain the realization with most layers for the current zone).

Application of the function:

• As a job in RMS extracting the RMS simbox information for each zone containing field parameters to be updated by ERT.

Output:

• A yml file with the simbox info

IMPORTANT NOTE: There is a bug in RMS in rmsapi for RMS14.2.2 related to rotated grids so this script will not create correct output for this version or older version of RMS. For version RMS15.0.1.0 it works as intended.

Closes: #290