Create methods on Node (?) to activate verbose logging for debugging purposes

Destination of the log is tbd.

Addresses the problem that "something" goes wrong while running tests / debugging, and the developer needs more info beyond, say, HTTP 500. Each application is different and may be written in a language/framework the developer is not familiar with so, how to activate logging and where the log goes is not so obvious. We should put it into the `Node` abstraction.

Related:

* https://github.com/fediverse-devnet/feditest-tests-fediverse/issues/4
* https://socialhub.activitypub.rocks/t/report-errors-in-server-processing/3006
* https://fed.brid.gy/docs#error-handling (current missing)
* https://codeberg.org/streams/streams/src/branch/dev/spec/Nomad/Messages.md