Display logs from within plugins

[Tlacenka]

User story

As a user, I want to know what is going on inside the plugins. I want to see not only errors but also warnings and other valuable information.

Acceptance criteria

• feat(plugin-lighthouse): add logLevel to lighthouse flags #710
• When an info or warning log is posted from within a plugin, the user can see it (can be behind verbose flag).
• As before, error logs are also visible to the user.

[vmasek]

Consider extending logger to log into log files so all errors from plugins could appear in some temporary file.

Turn off logging --help options on error.

[BioPhoton]

Consider extending logger to log into log files so all errors from plugins could appear in some temporary file.

I would suggest to implement the stdout and stderr properly and log it directly to the console.

Not sure what the file can help more in comparison to styled and formatted logs in CI/locally.

[BioPhoton]

Resolved in PRs of #888