style: limit line length per file extension

Editorconfig can only act based on file extension and path, not
attributes, it remains a mean only for multiple collaborators to use the
same configuration on their editor. When it is too restrictive, such as
not considering the file syntax, use a lint tool for the specific file
type instead of trusting editorconfig. Changes were made to increase
readability.

salt/sys-wireguard/files/server/qubes-firewall.d/50-sys-wireguard-var

@@ -21,7 +21,9 @@ set_nft_dnat(){
   ipv="${1}" # empty(4), 6
   proto="${2}" # tcp, udp
   dns_host="${3}"
-  set_nft "insert rule ip${ipv} qubes custom-dnat iifgroup 2 ${proto} dport 53 dnat to ${dns_host}"
+  rule_prefix="insert rule ip${ipv} qubes custom-dnat iifgroup 2 ${proto}"
+  rule_suffix="dport 53 dnat to ${dns_host}"
+  set_nft "${rule_prefix} ${rule_suffix}"
 }
 
 dns="$(grep -s "^\s*DNS\s*=\s*\S\+" "${wg_conf}" | sed "s/.*=//;s/ //g")"