[Feature] Teleport and warp system (with multiple world support)

[NightLunya]

A clear description of the feature you'd like to see implemented

I know the teleport function started to be WIP by the devs, so there's might be some stuff already planned but here's my suggestion:
Being able with a command to not only send a player into a server, but actually teleport directly to a player, and specified locations (warp system) other than the spawn. Optionally, be able to support warp to non-default world of the server (ex: Multiverse-Core support). Warps would be encoded as world coordinates, and could be stored as Yml or SQLite (maybe with a bridge plugin for Spigot/Paper side)

I think this function would be really appreciated for a plugin which wants to give "Essentials" commands.
Allow teleport or warp could also complement the other issue "GUI server selector" functions ?