added access variable to exams soo we can distinguish private, public and confidential exams and also bugfixes and improvements

src/pages/api/exam/[module]/index.ts

@@ -10,6 +10,7 @@ import { getApprovalWorkflowsByExamId, updateApprovalWorkflows } from "@/utils/a
 import { generateExamDifferences } from "@/utils/exam.differences";
 import { getExams } from "@/utils/exams.be";
 import { isAdmin } from "@/utils/users";
+import { access } from "fs";
 import { withIronSessionApiRoute } from "iron-session/next";
 import type { NextApiRequest, NextApiResponse } from "next";
 
@@ -52,6 +53,7 @@ async function POST(req: NextApiRequest, res: NextApiResponse) {
 
 	try {
 		const exam = {
+			access: "public", // default access is public
 			...req.body,
 			module: module,
 			entities,