Lets add Error and Debug log levels which can be also forwarded to stderr

[k2589]

What should it do?

Let's update logger package to:

• Properly initialize log
• Add Debug and Error levels implementation in this package
• Add forwarding to stderr on request
• Maybe: ?switch to slog package?

In this issue, I would like to discuss Maintainers and Comunity opinion, and maybe implement it based on that