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/embla-carousel/cjs/components/DragTracker.d.ts

@@ -0,0 +1,10 @@
+import { AxisOptionType, AxisType } from './Axis';
+import { WindowType } from './utils';
+export type PointerEventType = TouchEvent | MouseEvent;
+export type DragTrackerType = {
+    pointerDown: (evt: PointerEventType) => number;
+    pointerMove: (evt: PointerEventType) => number;
+    pointerUp: (evt: PointerEventType) => number;
+    readPoint: (evt: PointerEventType, evtAxis?: AxisOptionType) => number;
+};
+export declare function DragTracker(axis: AxisType, ownerWindow: WindowType): DragTrackerType;