User guide for COSMO solvation model?

[xiki-tempula]

Is your feature request related to a problem? Please describe. The new xTB release features the COSMO solvation model, but the website doesn't have any documentation with regard to it (https://xtb-docs.readthedocs.io/en/latest/gbsa.html).

Describe the solution you'd like It might be good to document it.

[awvwgk]

The COSMO solvation model is still very experimental and there remains a lot work to be done to make it a serious competitor for our ALPB solvation model (both in speed and accuracy). Right now, I consider it an expert feature, as a lot of settings require tuning before it is really usable (especially the radii for the cavity construction are far from optimal with the current “default”).

[xiki-tempula]

Thank you.