Added example script with credits content in data/menu/credits/Credits_PC.scr.

Added scripts to define example custom loot in baskets.

Scripts directory: Steam\steamapps\common\Dying Light\DevTools\workshop\[PROJECT_NAME]\data\scripts\inventory
Scripts descriptions:

color_sets.loot - Defines colors probability in color sets for containers. Sum for all color must be equal 100.
containers.loot - Defines loot for specific meshes and skin.
default.loot - Defines loot content sets.
item_sets.loot - Defines items for loot content sets.

List of all available for loot items are in ID combo list in Attributes window for Item Spawner. Item Spawner can be placed from object types in Objects window.

Initial submit.