feat: support baidu's embedding model (close #324)

controller/relay.go

@@ -99,6 +99,19 @@ type OpenAITextResponse struct {
 	Usage   `json:"usage"`
 }
 
+type OpenAIEmbeddingResponseItem struct {
+	Object    string    `json:"object"`
+	Index     int       `json:"index"`
+	Embedding []float64 `json:"embedding"`
+}
+
+type OpenAIEmbeddingResponse struct {
+	Object string                        `json:"object"`
+	Data   []OpenAIEmbeddingResponseItem `json:"data"`
+	Model  string                        `json:"model"`
+	Usage  `json:"usage"`
+}
+
 type ImageResponse struct {
 	Created int `json:"created"`
 	Data    []struct {