xoa.show_paths

Print some xoa paths
Example
In [1]: show_paths()
- xoa library dir: /home/docs/checkouts/readthedocs.org/user_builds/xoa/conda/latest/lib/python3.11/site-packages/xoa
- user config file: /home/docs/.config/xoa/xoa.cfg [*]
- user CF specs file: /home/docs/.config/xoa/cf.cfg [*]
- user CF cache file: /home/docs/.cache/xoa/cf.pyk
- data samples: mercator.cfg hycom.gdp.u.nc argo-7900573.nc hycom.gdp.v.nc gdp-6203641.csv croco.south-africa.surf.nc croco.cfg croco.south-africa.meridional.nc hycom.gdp.h.nc hycom.cfg croco.south-africa.zonal.nc ibi-argo-7900573.nc gdp.cfg argo.cfg
*: file not present