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

server/scripts/text_to_speech.py

@@ -0,0 +1,22 @@
+import asyncio
+import argparse
+import edge_tts
+
+async def generate_speech(text, voice, output_file):
+    communicate = edge_tts.Communicate(text, voice)
+    await communicate.save(output_file)
+
+if __name__ == "__main__":
+    parser = argparse.ArgumentParser(description='Text to Speech using Edge TTS')
+    parser.add_argument('--text', required=True, help='Text to convert to speech')
+    parser.add_argument('--voice', required=True, help='Voice to use (e.g., zh-CN-YunxiNeural)')
+    parser.add_argument('--output', required=True, help='Output MP3 file path')
+
+    args = parser.parse_args()
+
+    try:
+        asyncio.run(generate_speech(args.text, args.voice, args.output))
+        print(f"Success: {args.output}")
+    except Exception as e:
+        print(f"Error: {e}")
+        exit(1)