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

.gitignore

@@ -0,0 +1,61 @@
+# Dependencies
+.claude
+/node_modules
+/web/node_modules
+/server/node_modules
+
+# Build outputs
+/server/dist
+/web/dist
+/web/build
+/server/build
+
+# Data and uploads
+/data
+/uploads
+/temp
+/server/uploads
+/server/data
+/server/temp
+
+# Env files
+.env.local
+.env.development
+.env.test
+/web/.env.local
+
+# Logs
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+
+# Coverage
+coverage
+.nyc_output
+
+# IDE
+.vscode
+.idea
+*.swp
+*.swo
+/server/.env
+/libreoffice-server/.venv
+/libreoffice-server/uploads
+
+# temp
+analyze_translations.py
+web/dist-check/
+web2
+db_output_utf8.json
+db_output.json
+server/check_db_v2.js
+server/check_models.js
+server/aurak.sqlite
+server/models_list.json
+server/models_status.json
+libreoffice-server/__pycache__/main.cpython-312.pyc
+nul
+.sisyphus/
+server/build_error.txt
+server/ts_errors.txt