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/index.d.ts

@@ -0,0 +1,11 @@
+export { EmblaOptionsType } from './components/Options';
+export { EmblaEventType } from './components/EventHandler';
+export { EmblaPluginType } from './components/Plugins';
+export { EmblaCarouselType } from './components/EmblaCarousel';
+export { default } from './components/EmblaCarousel';
+export { CreatePluginType, EmblaPluginsType } from './components/Plugins';
+export { CreateOptionsType } from './components/Options';
+export { OptionsHandlerType } from './components/OptionsHandler';
+export { EmblaEventListType } from './components/EventHandler';
+export { EngineType } from './components/Engine';
+export { ScrollBodyType } from './components/ScrollBody';