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/utils/uuid.ts

@@ -0,0 +1,17 @@
+/**
+ * Utility function to generate a UUID.
+ * A wrapper for crypto.randomUUID() that provides a fallback for non-secure contexts (HTTP, older browsers, etc.).
+ */
+export const generateUUID = (): string => {
+    // Check if crypto.randomUUID is available (only available in secure contexts like HTTPS/localhost)
+    if (typeof crypto !== 'undefined' && typeof crypto.randomUUID === 'function') {
+        return crypto.randomUUID();
+    }
+
+    // Fallback for non-secure contexts or older browsers (RFC4122 v4 compatible)
+    return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, (c) => {
+        const r = (Math.random() * 16) | 0;
+        const v = c === 'x' ? r : (r & 0x3) | 0x8;
+        return v.toString(16);
+    });
+};