networkmgr won't auto-start at login

[ant-222]

Although networkmgr duly adds itself to the XDF autostart directory, a freshly installed instance won't actually autostart on FreeBSD 14.1 because of its invocation via sudo. Whereas this program is meant to autostart, this is problem.

If at all possible, modify the installer so that it configures networkmgr to autostart without futher configuration by hand, or at least provide the instructions to do so in the pkg-message or the manual.

[ericbsd]

The port should set up sudo if your user is in the wheel group.