Implement Inventory System

[mihaidornea]

The inventory can be triggered by pressing the "I" key. In order to move, use left click on the terrain. To pick up an item, right click on it.

Tanislav Andrei Daniel:

• Add Inventory UI
• Add interaction scripts to add and remove items
• Make stackable/unstackable items show up correctly
• Add scriptable objects with different properties

Dornea Mihai Ioan:

• Create Items (Consumable / Equipment) - Scriptable Objects
• Create Interactables
• Add Player Control - Item interactions
• Add Pick-up action