Added an in-game clock that is in sync with the server.

Basic day-night cycle.

Added a basic AI object (Chicken) for testing purposes.

The player can now interact with specific items to fire some events.

Added an Item to the game : [Tree Seed/Sapling] (Can be planted on the ground and will grow into a tree)

Modified Tree loottable => %25 chance of dropping a tree seed when destroyed.