In case of failure, logs should be saved as artefact

[Tchoupinax]

Logs are written inside local_data/logs by default.
Also, it can be overridden with IGGY_SYSTEM_PATH.

[hubcio]

Make it an option, like we discussed:

• always upload logs as an artifact (compressed ofc)
• never upload logs from iggy-server to github, regardless of action status
• on-failure - upload logs when action fails for any reason (this action OR whole flow?)

Feel free to modify those or add any other options.