CI: test build LuCI packages
CI: test build LuCI packages

While all LuCI packages should always build fine, this allows others to
directly install those packages within test setups.

Signed-off-by: Paul Spooren <1d6e1cf70ec6f9ab28d3ea4b27a49a77654d370e@aparcar.org>

hnyman/luci,openwrt/luci,openwrt/luci,hnyman/luci,openwrt/luci,lbthomsen/openwrt-luci,lbthomsen/openwrt-luci,hnyman/luci,hnyman/luci,hnyman/luci,lbthomsen/openwrt-luci,lbthomsen/openwrt-luci,lbthomsen/openwrt-luci,hnyman/luci,openwrt/luci,lbthomsen/openwrt-luci,openwrt/luci,openwrt/luci,lbthomsen/openwrt-luci,openwrt/luci,hnyman/luci,lbthomsen/openwrt-luci,hnyman/luci,openwrt/luci