FR: Add stdout debug logging to daemon mode

[Crypto2099]

When attempting to troubleshoot Oura configurations running via a systemd service in daemon mode, there is little to nothing in the way of messages printed to stdout that can be observed from common tools such as journalctl or the terminal window.

I propose that it would be helpful to add a configurable toggle of debugging-relevant information that could be printed to stdout in order to observe the status of the Oura instance in daemon mode.

Examples of useful information:

• Connection to node/socket success/failure
• Synchronization status
• Webhook timeouts or other sink errors