Get Earned Custom Badges (not notified)

[applepie7864]

• Branch off of annie/schema_refactor & review the new schema (https://drive.google.com/drive/u/0/folders/1rggcVSIJB7tHXxEQmL6zCRsCP6Ce6YSw)
• Add a boolean property, notified, to the EarnedCustomBadge model (in prisma.schema) with a default value of false
• Add a resolver the gets all earned custom badges (include custom badge as well) with notified set to false for a particular participant
• Make sure to also update notified to true inside the resolver