setLogLevel function on the cli package

> However, it seems that you didn't update the setLogLevel function on the cli package. We should probably talk about it in an issue.

Yeah, I was a bit unsure about this part of the `cli` package, as it seemed to me as if the log level should cause messages to be printed out for the user independently of their knowledge about the debug module/environment variables. If we switched to using `debug` here as well, the `setLogLevel` function/action could become obsolete. As this seems to require a bit more discussion, opening an issue is definitely a good idea :)

_Originally posted by @JKRhb in https://github.com/eclipse/thingweb.node-wot/issues/813#issuecomment-1202954440_