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/components/Animations.d.ts

@@ -0,0 +1,13 @@
+import { EngineType } from './Engine';
+import { WindowType } from './utils';
+export type AnimationsUpdateType = (engine: EngineType) => void;
+export type AnimationsRenderType = (engine: EngineType, alpha: number) => void;
+export type AnimationsType = {
+    init: () => void;
+    destroy: () => void;
+    start: () => void;
+    stop: () => void;
+    update: () => void;
+    render: (alpha: number) => void;
+};
+export declare function Animations(ownerDocument: Document, ownerWindow: WindowType, update: () => void, render: (alpha: number) => void): AnimationsType;