disable-common.inc: blacklist doas binary

OpenDoas is an alternative to sudo.  It is an unofficial port of
OpenBSD's doas.  Details:

    $ LC_ALL=C pacman -Si galaxy/opendoas |
      grep -e '^Version' -e '^Description' -e '^URL'
    Version         : 6.8.2-1
    Description     : Run commands as super user or another user
    URL             : https://github.com/Duncaen/OpenDoas

Environment: Artix Linux.

Also, add /etc/doas.conf to etc/ids.config.

etc/ids.config

@@ -128,6 +128,7 @@ ${HOME}/.local/share/autostart
 /etc/apparmor*
 /etc/chkrootkit.conf
 /etc/cracklib
+/etc/doas.conf
 /etc/libaudit.conf
 /etc/group*
 /etc/gshadow*

etc/inc/disable-common.inc

@@ -479,6 +479,7 @@ blacklist ${PATH}/chage
 blacklist ${PATH}/chfn
 blacklist ${PATH}/chsh
 blacklist ${PATH}/crontab
+blacklist ${PATH}/doas
 blacklist ${PATH}/evtest
 blacklist ${PATH}/expiry
 blacklist ${PATH}/fusermount