[Observium] ARP policer counter

Hi Observium Team,

Is there a chance to add arp packets counters to the interface graphics?

JUNIPER-FIREWALL-MIB::jnxFWCounterPacketCount."__default_arp_policer__"."__default_arp_policer__".policer = Counter64: 0 JUNIPER-FIREWALL-MIB::jnxFWCounterPacketCount."ARP-POLICER-ge-1/0/0.0-inet-arp"."ARP-POLICER-ge-1/0/0.0-inet-arp".policer = Counter64: 0 JUNIPER-FIREWALL-MIB::jnxFWCounterPacketCount."ARP-POLICER-ge-4/0/0.0-inet-arp"."ARP-POLICER-ge-4/0/0.0-inet-arp".policer = Counter64: 376

Thanks!