I started to make an Home Assistant Integration a while ago. You can find it here: https://github.com/JohNan/home-assistant-flichub
I never completed it completely but I think it should work partially at least.
It uses a TCP connection for communication that has to be setup on the Flic Hub. A linked repo is available in the above repo.
I also just noticed that Flic have released a MQTT client which should make it a lot easier to create an HA Integration. I might give it a shot to convert this one to using MQTT instead.