[integration/peerlab] Noisy logs with `--debug`

[Tobiaspk]

Issue: When setting the --debug flag, the output is overflown by logs from dependencies like numba and other packages. This makes it difficult to focus on logs relevant to segger.

It might be better if the --debug flag increases logging verbosity for segger scripts only.

Proposed:

• Add a new parameter to setup_logger() to control logging specifically for segger.
• Add a SEGGER_LOG_LEVEL environment variable to control this on a global level too.