Add metric for agentd vs agent2

As I am in the process of migrating from agentd to agent2 across my hosts, it would be nice to have a metric that tells me if the agent is agentd or agent2 in the template module "Zabbix agent". Right now, I've got something that is scraping "Software installed" as a dependent item but it's rather messy. Especially on the older systems that will need to remain on agentd. It would be nice if it was built into the agent item types.

https://www.zabbix.com/documentation/current/manual/config/items/itemtypes/zabbix_agent

Thanks.