[APP-6881] Add disable wifi power save option

[ale7714]

No description provided.

[ale7714]

I confirmed looking at network manager logs that the config file logs without warning or errors

[ale7714]

@Otterverse I can only get the change to apply by actually rebooting the device. Rebooting NetworkManager is not enough. Maybe am I missing something?

I tried:

		err := w.settings.ReloadConnections()
		if err != nil {
			return errw.Wrap(err, "error reloading connections after wifi-powersave.conf update")
		}

and while i see on the networkmanager logs Nov 19 02:26:34 raspberrypi NetworkManager[589]: <info> [1731983194.6017] audit: op="connections-reload" pid=1104 uid=0 result="success"

I don't really see powersave changing. Rebooting the pi does work.

[Otterverse]

LGTM! I think we can get a beta out tomorrow and start some testing.