How to enable "imaprotect" integration when it is not available in the GUI?

Hello everyone,

First of all, thanks for making HA an open source app. Being myself part of an open source project it is great to see such a community and such a well design app. It really makes you want to dig further!

Back to the subject of this thread. I would like to add this integration about the “IMA Protect” alarm system to my HA server. From reading the repo README, it looks like the integration should be listed in the HA integration dropdown but I don’t see it at all.
Am I missing something? Like are some integrations meant to be retrieved on the side and uploaded to my HA or how do we add third-party integrations that are not supported officially?

Thanks,
Guillaume