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/tailwind.config.js.bak

@@ -0,0 +1,13 @@
+/** @type {import('tailwindcss').Config} */
+export default {
+    content: [
+        "./index.html",
+        "./**/*.{js,ts,jsx,tsx}",
+    ],
+    theme: {
+        extend: {},
+    },
+    plugins: [
+        require('@tailwindcss/typography'),
+    ],
+}