[Sulphural]

Follow-up to #162. Take Me There already works on main, so this only handles the packet that was mistaken for it.

Take Me There is client-side. The tracker button calls the client's TakeMeToObjective, which pathfinds on the client's own navmesh to the objective target (from ObjectiveTargetUpdatePacket) and walks the player there. Any path requests go through ClientPathRequestPacket, which main already answers. Tested in game: the player walks to the objective.

Opcode 142 is PacketClientLuaMetrics, not a Take Me There request. The button also bumps a Lua metric counter, and the client flushes those every 30 seconds as short 142, int count, { uint hash, string name, int value }. Our logs only ever show the TakeMeThere counter (hash 0xBC804F67). It was arriving as an unhandled world packet every 30 seconds.

This adds PacketClientLuaMetrics and a handler that logs each metric at trace level, routed in PacketTunneledClientWorldPacketHandler.