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/react-day-picker/tsconfig.json

@@ -0,0 +1,27 @@
+{
+  "compilerOptions": {
+    "target": "es5",
+    "jsx": "react-jsx",
+    "module": "es6",
+    "moduleResolution": "node",
+    "rootDir": "./",
+    "baseUrl": "./src",
+    "noEmit": true,
+    "paths": {
+      "test/*": ["../test/*"]
+    },
+    "declaration": true,
+    "sourceMap": true,
+    "outDir": "./dist",
+    "importHelpers": true,
+    "esModuleInterop": false,
+    "allowSyntheticDefaultImports": false,
+    "forceConsistentCasingInFileNames": true,
+    "strict": true,
+    "skipLibCheck": true,
+    "resolveJsonModule": true,
+    "isolatedModules": false,
+    "types": ["jest", "node"]
+  },
+  "include": ["test", "src"]
+}