New: net/wireless

Hi ports-people,

some people on FreeNode's #openbsd asked me to submit a port for a
little utility I wrote that can be used to automate the "scan for my
wifi and configure it" process a bit.

The networks can be configured in a plaintext file in /etc that looks
like this:

device iwm0

wpa greg ThisAintMyPassword
802.1x eduroam
open hochstift.freifunk.net/pad-city

scanning and configuration is then done via

wireless /path/to/my/config

for example.

For configuring 802.1x, it pokes wpa_supplicant. I'm not sure how one
would do a Debian-style "This port suggests another port"-message in the
ports system, so that might be something I'd need to add.

So yeah, does it make sense to have in the ports tree?

--
Gregor