[Feature Request] Display expiry time in raid channel name

[onetruejp]

Some of the admins in my local PoGo Discord have begun adding expiry times to the raid channel name. They appear thus: "#heatran-518-US-Post-Office"

They're just manually prepending the expire time to the location string and I think this is something that would be valuable to automate and allow trainers more info to conveniently prioritize raids.