Implement: Basic Inventory System

[AiraldiSebastian]

Basic Inventory System

A basic inventory system for our FPS should offer at least the following functionality:

1. • Capable to store items
2. • Capable to add items to it
3. • Capable to remove items from it
4. • Capable of moving items inside of
5. • Calculate if an item can be picked/dropped or not

This list is still subject to possible changes

[AiraldiSebastian]

A Hotbar simulating a very simple and basic Inventory System was added in da51427.

Its possible to pick up and drop to 5 items and to move through the Hotbar with num keys 1 to 5.

[AiraldiSebastian]

All functionality for our inventory as described was implemented in commit 35fb0cc. In the following days the inventory system was upgraded and made better, the implementation was done in commit 43122fc.