No mention of how to generate logs (verbose=True) for pystan3

[jelc53]

Describe the problem with the documentation

Not sure if this functionality exists yet for pystan3 (ability for user to specify verbosity to generate more extensive logging), but if so it would be grat to document how this argument can be passed into either the build or sampler methods.

Suggest a potential alternative/fix

I have looked in detail at the code base so not sure if this is just a documentation ticket or also a code enhancement.