Compress or remove CAT raw files from results folder

[d4straub]

Is your feature request related to a problem? Please describe

The results folder can be huge and (almost) all ways to reduce it are welcomed.
With mag v1.2.0, I had a case where results/Taxonomy/*/raw/* made up a fifth of the results folder storage space, compressing it saved several GB. This is the output of CAT that is also summarized in results/Taxonomy/<Assembler>/*.bin2classification.names.txt.

Describe the solution you'd like

Compressing the folder content, i.e. results/Taxonomy/*/raw/*, would be great.

Describe alternatives you've considered

Alternatively the results/Taxonomy/*/raw folder might be not needed in the results folder at all. Only the log file might deserve keeping.

[skrakau]

Solved in #193