feat(AI): streaming response

openai/chat.go

@@ -44,3 +44,28 @@ type ChatResponse struct {
 	Usage   map[string]int       `json:"usage"`
 	Choices []ChatResponseChoice `json:"choices"`
 }
+
+type ChatResponseStream struct {
+	ID      string
+	Object  string
+	Created int
+	Model   string
+	Stream  chan string
+	Err     error
+}
+
+type ChatResponseStreamChunk struct {
+	ID      string
+	Object  string
+	Created int
+	Model   string
+	Choices []ChatResponseStreamChoice
+}
+
+type ChatResponseStreamChoice struct {
+	Index        int    `json:"index"`
+	FinishReason string `json:"finish_reason"`
+	Delta        struct {
+		Content string `json:"content"`
+	} `json:"delta"`
+}