pub struct update_player;
Reads the save file and updates the requested player stats.
The request structure is the following:
<NAME>is replaced with the username of the player you’re trying yo update
<STAT>is replaced with the stat that you want to update, which can be:
health, which is deprecated in favor of
xpos, which means you want to update the position of the player in the X coordenate
ypos, which means you want to update the position of the player in the Y coordinate The reply will simply be a json object containing “OK” if the operation succeeded.