Fix AddItem putting a string into the created date field when giving starter items

[Jamesking56]

Describe Pull request
Fixes starter items putting in a string in the created date field, causing inventories to crash in game when being read from the database.

Questions (please complete the following information):

• Have you personally loaded this code into an updated qbcore project and checked all it's functionality? Yes
• Does your code fit the style guidelines? Yes
• Does your PR fit the contribution guidelines? Yes

[Jamesking56]

This only applies for ps-inventory. apologies.

[Sanriku-Gaming]

Yea, this is a local change for you, not for the framework. qb-inventory doesn't have a created date.
function AddItem(identifier, item, amount, slot, info, reason)