move directories_mHM to directories_general as a meteo dir
All specified folders under directories_mHM
in mhm.nml
can be combined essentially in directories_general
under a dir_Meteo
.
https://git.ufz.de/mhm/mhm/-/blob/develop/mhm.nml#L272
Does somebody demand to be able to specify different folders for each entry in directories_mHM
?
Otherwise we could get rid of that.