Backend: Auxiliary Quiz Endpoints

[arastasci]

Issue Description

We need to improve the quiz endpoints as follows:

• Add created quiz endpoints in which the user receives all quizzes they've created.
• Add solved quiz endpoints in which the user receives the quiz instances they've solved.
• Add liked quiz endpoints in which the user receives the quizzes they've liked.
• add booomarked quiz endpoints in which the user receives the quizzes they've bookmarked.

Estimated Time

Estimated Time: 1hour

Reviewer Assignment

Reviewer: @YavizGuldalf

[arastasci]

@YavizGuldalf please see #611.

[YavizGuldalf]

Good work, @arastasci