Support sets in a table but outside a chain

[Ramblurr]

I'd like to define some Sets in the firewall table, but currently there doesn't seem to be a way to insert lines outside the chain blocks:

nixos-nftables-firewall/modules/chains.nix

Lines 171 to 176 in 2c5a199

	ruleset = ''
	table inet firewall {
	${concatMapStrings (x: "\n${x}\n") requiredChains}
	}
	'';
	};

This would let me use rules like:

example = {
    from = [ "vlan1" ];
    to = [ "local" ];
    extraLines = [
    ''meta l4proto { tcp, udp } th dport @some_service_port ip daddr @some_service counter return comment "allow access some service"''
    ];
};

with sets like:

set some_service_port {
  type inet_service
  elements = { 2001, 2002 }
}

set some_service {
  type ipv4_addr
  elements = { 10.0.0.10 }
}

Any interest in supporting this?