Well Plex has the live TV stuff you just need a tuner. So there are programs that act as tuners for IPTV. Like a middle man between IPTV and Plex. I’m still switching around trying to find one that works best. They all seem to have pros and cons. There is Xteve and Telly. Xteve is easier to setup but hasn’t been updated in a long time. There is a newer fork of xteve called Threadfin but it has a bug which keeps me from being able to add a m3u link. But I found a fork of the fork where the bug is fixed.