Add daemon mode

[vishr]

Approach

• -d option to put tunnel in a daemon mode with pid stored in a file
• Create tunnel object with useful attributed and save it in database
• Extend commands like ls, log/logs, rm etc

[sciotta]

Hi! There is any alternative way to put labstack tunnel on daemon mode?

[vishr]

You might want to check https://kb.iu.edu/d/afnz