It’s customizable, but you’re going from the OS up, it needs to come from HA core/supervisor and go down 
Supervisor manages the OS.
Secondly, even if you added this to your OS, you’d still need a way to get the information into HA.
Thirdly, I have no idea why you’re upset with me. Remember, you’re here asking questions and I’m answering them. Yet it’s my fault for not providing the answer to a question you didn’t ask.