feat: implement QuestionBank CRUD with pagination and template query

- Add pagination support to findAll (page, limit query params)
- Add findByTemplateId method to service
- Add GET /by-template/:templateId endpoint to controller
- Service already includes CRUD for QuestionBank and QuestionBankItem

web/src/components/ui/card.tsx

@@ -0,0 +1,38 @@
+import React from 'react';
+
+interface CardProps {
+  children: React.ReactNode;
+  className?: string;
+}
+
+export const Card: React.FC<CardProps> = ({ children, className = '' }) => {
+  return (
+    <div className={`bg-white rounded-lg border border-slate-200 shadow-sm ${className}`}>
+      {children}
+    </div>
+  );
+};
+
+export const CardHeader: React.FC<CardProps> = ({ children, className = '' }) => {
+  return (
+    <div className={`p-4 border-b border-slate-100 ${className}`}>
+      {children}
+    </div>
+  );
+};
+
+export const CardTitle: React.FC<CardProps> = ({ children, className = '' }) => {
+  return (
+    <h3 className={`text-lg font-semibold text-slate-800 ${className}`}>
+      {children}
+    </h3>
+  );
+};
+
+export const CardContent: React.FC<CardProps> = ({ children, className = '' }) => {
+  return (
+    <div className={`p-4 ${className}`}>
+      {children}
+    </div>
+  );
+};