(Homes) Add a message when setting your spawn mentioning "/home bed"

When you sleep in a bed, in addition to the vanilla "Respawn point set" message, add a message saying something like "You may return to your bed using /home bed" The only ways for a new player to know that /home bed exists (besides being told) are either noticing that "/home bed" auto-completes, or the wiki. I would guess many players newer to the server are not aware that /home bed exists. It's very helpful in some cases. If you don't know about /home bed, you can intentionally die to go back to your bed (don't think there is much of a downside in RPG, keep inv is on) but this is a better way