Add setUserLastPosition to API

[AlessioDP]

This PR adds setUserLastPosition method to BaseHuskHomesAPI.

I specified Since: 4.2 because I do not know what is the next version.

The method will be used to set user last location on cross-network teleport (Parties#234)

[WiIIiam278]

Yeah, okay.

I think the reason I didn't expose this by default is since there's an option for listening to the teleport event already which should work with your plugin as is, and I provide a way in the Teleport class to set whether to update this on execution. But I can see the use case here :)

[AlessioDP]

I did not test it yet but I am pretty sure that in Bukkit it would works for teleport/home already. But those commands are executable by Bungeecord/Velocity too and the original server won't get updated.

[WiIIiam278]

Just note HuskHomes isn't installed on the proxy at all, it's all handled on the backend through platform implementations of dispatching / listening to the plugin message channel

[AlessioDP]

No problem, my plugin does the same to dispatch the event to the plugin inside Bukkit so I will be able to call the update position method with the coordinates + original server.