[feat] Display connection-name when connected to ethernet

[vatsalkeshav]

This pr adds functionality to get and display the connection_name for wired connection as set by NetworkManager as ethernet_id along with its icon.
Should solve issue 1851

[vatsalkeshav]

Implementation of MAC address as ethernet_id could also be done if that'd help

[bim9262]

Not all systems use NetworkManager. This change will cause an error to be thrown on those systems.

[vatsalkeshav]

Hi,
(post rebase)I've fixed the NetworkManager d-bus calls to gracefully return none on systems without NM

Also added a systemd-networkd fallback in case NM is not there - which tries NM first, then queries org.freedesktop.network1 via d bus( also with a Describe method fallback for older systemd <250 where the NetworkFile property isn't exposed) - also returns none in case that's present neither

Tested both paths on an orbstack ubuntu 22.04 VM running on mac m1 (it has systemd 249, systemd-networkd managing eth0