wg-quick: changes in freebsd

Hi,

in FreeBSD 15 `ifconfig' command required a specific netmask when assign 
an IP, but wg-quick extract (and save to .conf file) only the address, 
without mask.

I just wrote a little patch (that's not my job, maybe awful) to save 
$address/$mask to $INTERFACE.conf:

# diff freebsd.bash /usr/local/bin/wg-quick
347,348c347,349
<       { read -r _; while read -r _ _ _ address _; do
<               new_config+="Address = $address"$'\n'
---
 >       { read -r _; while read -r _ _ network address _; do
 >               mask=$(echo "$network" | awk -F / '{print $2}')
 >               new_config+="Address = $address/$mask"$'\n'

Feel free to point me the correct way to submit a patch request, thank you.

Cris