Add Zabbix node

[RicardoE105]

It looks like a community member has already developed the node.

Type "flag" for inputs

Hi @mvandyk ! Yes, I’ve used booleans for this matter but I decided to suggest a new “flag” type in case there are also other people who need it. My username here is different but we talk about the same Zabbix package I’m adding a link to it and also a link to our pull request: