Also update updateMetadatagroup to only update picked challenges when to challenge already exists for that item.
Updated the import-catalog command to also import the signature challenges and associate them with the items that want them.
- Moved initOrGetGroup and updateMetadataGroup into own MetadataController.php becauseits really big and cluttered the PlayerController.php
- Added Challenges and pciked challenges for the characters
- Added that when the game sends us an update for the Character metadata, it automatically creates unknown challenges in the database and sets the picked challenges for this characterData
