[SNMP] Add metadata for traps telemetry metrics (#14769)

* Add metadata for traps telemetry metrics

* Remove commas from desc 🤦‍

* Add units

snmp/metadata.csv

@@ -815,3 +815,9 @@ snmp.cpu.usage,gauge,,percent,,"Percentage of CPU currently being used.",0,snmp,
 datadog.snmp.check_duration,gauge,,second,,"The duration of a check run in seconds. The time needed for the integration check to run once on a device, including time to collect snmp data from a device, processing and submitting metrics/service checks/etc.",0,snmp,,
 datadog.snmp.check_interval,count,,second,,The interval between check runs in seconds. The time delta between end of current check run and end of last check run,0,snmp,,
 datadog.snmp.submitted_metrics,gauge,,,,The number of SNMP metrics submitted metrics for a check run (does not include service checks and telemetry metrics).,0,snmp,,
+datadog.snmp_traps.received,count,,packet,,The total number of SNMP Traps received.,0,snmp,,
+datadog.snmp_traps.invalid_packet,count,,packet,,The number of invalid SNMP Traps packets received tagged by reason.,0,snmp,,
+datadog.snmp_traps.traps_not_enriched,count,,packet,,The number of SNMP Traps that were not enriched.,0,snmp,,
+datadog.snmp_traps.vars_not_enriched,count,,,,The number of SNMP Traps variables that were not enriched.,0,snmp,,
+datadog.snmp_traps.incorrect_format,count,,packet,,The number of SNMP Traps dropped because of an incorrect format tagged by error.,0,snmp,,
+datadog.snmp_traps.forwarded,count,,packet,,The number of SNMP Traps forwarded.,0,snmp,,