feat: support gemini output text and inline images. (close #866)

relay/channel/gemini/adaptor.go

@@ -99,7 +99,7 @@ func (a *Adaptor) ConvertOpenAIRequest(c *gin.Context, info *relaycommon.RelayIn
 	if request == nil {
 		return nil, errors.New("request is nil")
 	}
-	ai, err := CovertGemini2OpenAI(*request)
+	ai, err := CovertGemini2OpenAI(*request, info)
 	if err != nil {
 		return nil, err
 	}