feat: add support for Doubao /v1/responses (#2567)

* feat: add support for Doubao /v1/responses

relay/channel/ali/adaptor.go

@@ -186,7 +186,7 @@ func (a *Adaptor) ConvertAudioRequest(c *gin.Context, info *relaycommon.RelayInf
 }
 
 func (a *Adaptor) ConvertOpenAIResponsesRequest(c *gin.Context, info *relaycommon.RelayInfo, request dto.OpenAIResponsesRequest) (any, error) {
-	// TODO implement me
+	//TODO implement me
 	return nil, errors.New("not implemented")
 }
 

relay/channel/volcengine/adaptor.go

@@ -270,6 +270,8 @@ func (a *Adaptor) GetRequestURL(info *relaycommon.RelayInfo) (string, error) {
 		//	return fmt.Sprintf("%s/api/v3/images/edits", baseUrl), nil
 		case constant.RelayModeRerank:
 			return fmt.Sprintf("%s/api/v3/rerank", baseUrl), nil
+		case constant.RelayModeResponses:
+			return fmt.Sprintf("%s/api/v3/responses", baseUrl), nil
 		case constant.RelayModeAudioSpeech:
 			if baseUrl == channelconstant.ChannelBaseURLs[channelconstant.ChannelTypeVolcEngine] {
 				return "wss://openspeech.bytedance.com/api/v1/tts/ws_binary", nil
@@ -323,7 +325,7 @@ func (a *Adaptor) ConvertEmbeddingRequest(c *gin.Context, info *relaycommon.Rela
 }
 
 func (a *Adaptor) ConvertOpenAIResponsesRequest(c *gin.Context, info *relaycommon.RelayInfo, request dto.OpenAIResponsesRequest) (any, error) {
-	return nil, errors.New("not implemented")
+	return request, nil
 }
 
 func (a *Adaptor) DoRequest(c *gin.Context, info *relaycommon.RelayInfo, requestBody io.Reader) (any, error) {