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/use-sidecar/dist/es2015/hoc.js

@@ -0,0 +1,15 @@
+import { __assign } from "tslib";
+import * as React from 'react';
+import { useSidecar } from './hook';
+// eslint-disable-next-line @typescript-eslint/ban-types
+export function sidecar(importer, errorComponent) {
+    var ErrorCase = function () { return errorComponent; };
+    return function Sidecar(props) {
+        var _a = useSidecar(importer, props.sideCar), Car = _a[0], error = _a[1];
+        if (error && errorComponent) {
+            return ErrorCase;
+        }
+        // @ts-expect-error type shenanigans
+        return Car ? React.createElement(Car, __assign({}, props)) : null;
+    };
+}