添加同步上游模型列表按钮：添加提示以及支持已有渠道获取

router/api-router.go

@@ -90,6 +90,8 @@ func SetApiRouter(router *gin.Engine) {
 			channelRoute.DELETE("/:id", controller.DeleteChannel)
 			channelRoute.POST("/batch", controller.DeleteChannelBatch)
 			channelRoute.POST("/fix", controller.FixChannelsAbilities)
+			channelRoute.GET("/fetch_models/:id", controller.FetchUpstreamModels)
+
 		}
 		tokenRoute := apiRouter.Group("/token")
 		tokenRoute.Use(middleware.UserAuth())