feat: verbosity level + reasoning

[pkarw]

@grabbou as we discussed - it would be awesome to have a simple way to increase the verbosity level and, at some point log the reasoning along with the task names - so it would be easier to optimize and to understand the execution plans

[pkarw]

Plus - add info on which parameters the tools were called with.

[grabbou]

Yup, should be added as option to built-in logger, and I guess we can consider turning it on by default.

[grabbou]

Will create a new logger interface that is bound to provider. It will provide pre/post request metadata, regarding model used, prompt used, token count etc.