Implement Server Side Player Tracking

**What is the Feature you wish to add?**
I wish to add some player tracking server side, so that we are always aware of any player's location on the server. This will also help with sending updates to new players that connect of other players locations.

**Give an estimate to how much work might go into creating this feature**
I believe this would take about 3 hours of work.

**Write a small list of steps that one would follow to create this feature.**
Edit the list that stores players server side to also store previous location. Make sure to update this every packet that comes through the server for that player.