feat: delete "deleteSession" method, validate questId and sessionId

server/src/api/validators/questValidator.js

@@ -0,0 +1,11 @@
+import { check } from 'express-validator'
+import { noError } from '../../middleware/validator.js'
+
+export const checkQuestId = () =>
+  check('questId').notEmpty().isString().isAlphanumeric().isLength({ max: 64 })
+
+export const questIdValidator = [checkQuestId(), noError]
+
+export default {
+  questIdValidator,
+}