Accessories

Major bug fixes for serialization issues and more.

Fixes:

• Fix issues with exponentially increased fortune and looting amounts due when having accessories equipped
• Fix possible crash with SlotAttributes containing invalid characters when saved
• Prevent issues with duplicate Unique slots being able to be registered
• Prevent crash when trying to remove modifier from no existing container
• Fix issues with serializing render options leading to crashing or not saving data
• Fix missing packet handler for holder data syncing
• Fix missing slot info for when the slot amount is zero within the tooltip