[Feature request] Add new options to discover inkscape dirs from CLI
Add new CLI switches to query system/user inkscape data directories
Usage example:
$ inkscape --user-data-directory
/home/username/.config/inkscape
$ inkscape --system-data-directory
/usr/share/inkscape
In particular it would ease 3rd-party extensions installation:
setup.py --install-path="$(inkscape --user-data-directory)/extensions"
Edited by Sergei Izmailov