NinjaOne integration: sync SNMP inventory (firmware and Custom SNMP attributes) for NMS devices

Proposed solution

• Pull SNMP-derived inventory for NMS devices from NinjaOne, including manufacturer, model, serial number, and firmware, when they aren’t available under system.

• Add a firmware Connected Field for NinjaOne devices.

• Allow Custom SNMP monitoring attributes (custom OIDs) to be mapped to Hudu asset layout fields, similar to how NinjaOne Custom Fields can be mapped today.

• Show these values on the NinjaOne card for NMS devices.