Class to define output directories

Hello, here is to discuss about the Jan's class to construct output directories for scRNAseq and ATACSeq.

The framework is available here: https://intranet.mpi-bn.mpg.de:8443/display/Bioinf/27_09_2022

@Vanessa.Heger and @Jan.Detleffsen are on charge of this, such as discussed today (28.09.2022).