[Service] CategoryScore

[mattrrubino]

Feature request

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Implement service for CategoryScore. Service provides the database calls.

Model

courseId: foreign_key
The CourseId linked to CategoryScore

userId: foreign_key
The UserId linked to CategoryScore

category: foreign_key
The Category linked to CategoryScore

score: integer
The score for Category

letterGrade: string[enum]
The letter-grade equivalent for the CategoryScore