Get logs from the probes

[alexey-yarmosh]

We need to find the proper way to get logs from the probes. That is required to debug probe issues, monitor the probes state and get notified when JS error happens.

Requirements:

• error data should be logged in cases like:
  • https://github.com/jsdelivr/globalping-probe/blob/master/src/index.ts#L125
  • https://github.com/jsdelivr/globalping-probe/blob/master/src/lib/updater.ts
  • https://github.com/jsdelivr/globalping-probe/blob/master/src/command/ping-command.ts#L123
• logs from the probes should be safe for the API, need to make sure broken probe won't take all the newrelic storage space (probably should be combined with Exponential backoff for probes #52 or another way of disabling the probes)
• most likely winston-socket.io should be used on the probe side, then log data to stdout on the API side.

[jimaek]

Current plan: Make it possible only for adopted probes via our upcoming dashboard. The user could view all probe logs and decide to send them to us if he wants. Maybe even offer an easy "generate debug info" button.