Merge branch 'dev' into chore/logging

backend/src/entities/assignments/group.entity.ts

@@ -0,0 +1,15 @@
+import { Entity, ManyToMany, ManyToOne, PrimaryKey } from '@mikro-orm/core';
+import { Assignment } from './assignment.entity.js';
+import { Student } from '../users/student.entity.js';
+
+@Entity()
+export class Group {
+    @ManyToOne({ entity: () => {return Assignment}, primary: true })
+    assignment!: Assignment;
+
+    @PrimaryKey({ type: 'integer' })
+    groupNumber!: number;
+
+    @ManyToMany({ entity: () => {return Student} })
+    members!: Student[];
+}