Introduce a command for debug purposes (such as "inspect", "debug" or "doctor")

[Serializator]

I today experienced an issue with MySQL. It gave a weird problem, and it was kind of difficult to find the proper logs to debug the problem. I think it'd be a great to have a command which you can use to debug such service.

Suggestion

• jale inspect <service>
• jale debug <service>
• jale doctor <service>

It could either output some kind of generalized log if the specific service only has a single log, or it could print some information in regards to where the logs are located.