feat: add medical test entities

src/modules/submissions/entities/submission.entity.ts

@@ -0,0 +1,37 @@
+import { Test } from '@/modules/tests/entities/test.entity';
+import { User } from '@/modules/users/entities/user.entity';
+import {
+  Column,
+  CreateDateColumn,
+  Entity,
+  ManyToOne,
+  OneToMany,
+  PrimaryGeneratedColumn,
+} from 'typeorm';
+import { SubmissionStatus } from '../enums/submission-status.enum';
+import { SubmissionAnswer } from './submission-answer.entity';
+
+@Entity()
+export class Submission {
+  @PrimaryGeneratedColumn()
+  id: number;
+
+  @ManyToOne(() => User, { nullable: true, onDelete: 'SET NULL' })
+  user?: User;
+
+  @ManyToOne(() => Test, { onDelete: 'CASCADE' })
+  test: Test;
+
+  @Column({
+    type: 'enum',
+    enum: SubmissionStatus,
+    default: SubmissionStatus.IN_PROGRESS,
+  })
+  status: SubmissionStatus;
+
+  @OneToMany(() => SubmissionAnswer, (answer) => answer.submission)
+  answers: Array<SubmissionAnswer>;
+
+  @CreateDateColumn()
+  createdAt: Date;
+}