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-react/components/useEmblaCarousel.d.ts

@@ -0,0 +1,11 @@
+import { EmblaCarouselType, EmblaOptionsType, EmblaPluginType } from 'embla-carousel';
+export type EmblaViewportRefType = <ViewportElement extends HTMLElement>(instance: ViewportElement | null) => void;
+export type UseEmblaCarouselType = [
+    EmblaViewportRefType,
+    EmblaCarouselType | undefined
+];
+declare function useEmblaCarousel(options?: EmblaOptionsType, plugins?: EmblaPluginType[]): UseEmblaCarouselType;
+declare namespace useEmblaCarousel {
+    let globalOptions: EmblaOptionsType | undefined;
+}
+export default useEmblaCarousel;