parseWBHeader extract Snakemake env config variables

[stefanches7]

• Call Python code from R
• Use Snakemake Python API to construct the appropriate object
• Copy over the attributes (merge)

[stefanches7]

So, the Snakemake API as such is now restricted to the one and only workflow call, which returns only boolean status of workflow (success/ failure). So no way to parse config values from some sm object itself that I see @kTakumo . It could be that there is some doubtful pythonic magic code to debug the function, but I don't come up with any idea.
What we can is read configfile of Snakefile, if it is there, and construct config out of it.