convert from raven to sentry-sdk

[dirkmueller]

Currently aiomisc depends on the optional dependency raven which however is obsoleted by sentry-sdk. would be good to convert to convert away from the unmaintained dependency to a maintained one.

[dirkmueller]

https://pypi.org/project/sentry-sdk/

[mosquito]

Hi @dirkmueller. If you want to improve it, I don't mind, but it scares me that sentry-sdk is completely incompatible with raven and its complexity, the number of integrations, is no longer invested in the concept of just sending exceptions. In any case, I don't mind if you suddenly decide to make PR with adding another one useful service called SentrySender, but it's shouldn't be replacement, let the user choose what he wants.