Ability to change display IP to static hostname

[ATechAdventurer]

Hi, I really love the idea of displaying the IP on the printer when it is idling. However, I would really like the ability to overwrite that IP value in favor of a local DNS hostname or proxied hostname. Adding an option to replace IP would be a sufficient solution without the need to query the system for said hostname.

[tpmullan]

All of that could be done with python. Feel free to open a PR. At this time I am not really interested in adding that information myself.