Cartesian aligned nested refinement for wind farm simulations

[sayerhs]

This pull-request introduces the capability to perform static refinements of user-defined Cartesian-aligned boxes at specified levels to mimic wind farm LES refinement used in SOWFA and nalu-wind.

input file parameters

tagging.static_refinement = 1
tagging.static_refinement_def = "static_refinement.txt"

refinement definition file

2                                  // Number of levels of static refinement
2                                  // Number of regions in level 0
90.0 90.0 0.0 390.0 795.0 600.0    // T001
600.0 90.0 0.0 795.0 795.0 600.0   // T002
2                                  // number of regions in level 1
180.0 300.0 0.0 300.0 690.0 300.0  // T001
690.0 300.0 0.0 795.0 690.0 300.0  // T002