[ENHANCEMENT] Ping discord user instead of discord id

[Bama94]

This changes the log of players joining. It's gives the @playersdiscordname instead of showing discord:astringofnumbers

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