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

package.json

@@ -0,0 +1,15 @@
+{
+  "name": "simple-kb-monorepo",
+  "private": true,
+  "workspaces": [
+    "web",
+    "server"
+  ],
+  "scripts": {
+    "dev": "concurrently \"yarn workspace web dev\" \"yarn workspace server start:dev\"",
+    "install:all": "yarn install"
+  },
+  "devDependencies": {
+    "concurrently": "^8.2.2"
+  }
+}