[GRASS-dev] python function to get the path to the GRASS configuration directory

[Pietro]

Dear devs,

The GRASS's configuration directory change from grass version and
depending by OS in use as explained here:

https://grasswiki.osgeo.org/wiki/GRASS_configuration_files_in_home_directory

I wonder if already exist somewhere C/Python API a function that
return the right path.

Any idea?
All the best

Pietro