Start feeding it too, or get one of the neighbors who’s been feeding it to help out. Your best bet is a feral cat trap, which are kinda pricey, but if you call around to a few local rescues or “trap, neuter, release” programs, they may be able to lend you one. Then you can likely just use food to lure it into the trap.
Of course, if this cat used to be someone’s pet, you could even just try luring it into a garage or, hell, a big cardboard box, from which you could put some thick gloves on and transfer it into a pet carrier
You could always put it into service as a network wide ad blocker with PiHole. Might also speed up web browsing a bit too, since PiHole also works as a DNS cache.