feat: redesign Exams List page to show submitted custom exams

- Added Custom Exams tab showing all exams from Generation page
- Displays title, module badges, duration, and status
- Added Create Exam button
- Kept Exam Sessions tab for institutional sessions
- Search filters across exams

Made-with: Cursor

node_modules/date-fns/addWeeks.d.ts

@@ -0,0 +1,24 @@
+/**
+ * @name addWeeks
+ * @category Week Helpers
+ * @summary Add the specified number of weeks to the given date.
+ *
+ * @description
+ * Add the specified number of week to the given date.
+ *
+ * @typeParam DateType - The `Date` type, the function operates on. Gets inferred from passed arguments. Allows to use extensions like [`UTCDate`](https://github.com/date-fns/utc).
+ *
+ * @param date - The date to be changed
+ * @param amount - The amount of weeks to be added.
+ *
+ * @returns The new date with the weeks added
+ *
+ * @example
+ * // Add 4 weeks to 1 September 2014:
+ * const result = addWeeks(new Date(2014, 8, 1), 4)
+ * //=> Mon Sep 29 2014 00:00:00
+ */
+export declare function addWeeks<DateType extends Date>(
+  date: DateType | number | string,
+  amount: number,
+): DateType;