Bug: Service restart in case of service failure

[Boldfor]

In case the service dies, it will be re-started.

[Boldfor]

@keptenkurk, any chance you find some time to have a look at my three PRs from January? Two of them only deal with the documentation, and one (this one) includes a minor check to systemd if the service dies.

[DjZU]

I don't think this commit is fixing anything.
I'd rather:

• Restart=on-failure
• Set exit codes to every sys.exit()
• Run without privileges to prevent adapter reset (see blueman-applet crash solved #110)
• Apply peplin/pygatt@16e15db (see Scanning just stops working suddenly without any reason. #95 (comment)) to prevent scan from randomly hanging

[Boldfor]

@DjZU, thanks a lot for sharing your thoughts.

I'd love to incorporate your changes into the repository. However, as observable from my other contributions to this project, I'm already operating clearly way above my knowledge level, so I have to wait for someone else to incorporate what you propose. However, I'd be happy to test, in case someone incorporates your thoughts.

[DjZU]

@Boldfor, you're welcome.
Operating clearly above my knowledge level is actually the way I've been learning! But I'm not familiar yet with pushing commits so I just share what works for me with the community hoping for someone to make the commits... Every step I described just give it a try!