Nftables custom QoS, round 2

[anon50098793]

so... some mods were needed to get it to "load" on 19.x.3, whether or not it works right i'm not able to test atm.

@dlakelan

      	    type filter hook ingress device $wan priority 0;
      	    type filter hook ingress device $lan priority 0;

had to use non-variables ( only ) here...

@dlakelan

table inet tag {

changed the name of 'tag' here and/or had to use netdev for ingress to play ball