センシティブフラグの理由を記載できるように

```
	@Column('jsonb', {
		default: [], nullable: true,
		comment: 'Reasons why the DriveFile is Sensitive.',
	})
	public sensitiveReasons: Set<'nudity' | 'violence' | 'racy' | 'spoiler' | 'hate' | 'illegal' | 'food' | 'r15' | 'r18' | 'r18g' | 'other'> | null;
```

こんな感じ？