fix: handle hf download by model id

Author: sangjanai

engine/controllers/models.cc

@@ -58,6 +58,20 @@ void Models::PullModel(const HttpRequestPtr& req,
           model_handle, desired_model_id, desired_model_name);
     } else if (model_handle.find(":") != std::string::npos) {
       auto model_and_branch = string_utils::SplitBy(model_handle, ":");
+      if (model_and_branch.size() == 3) {
+        auto mh = url_parser::Url{
+            .protocol = "https",
+            .host = kHuggingFaceHost,
+            .pathParams = {
+                model_and_branch[0],
+                model_and_branch[1],
+                "resolve",
+                "main",
+                model_and_branch[2],
+            }}.ToFullPath();
+        return model_service_->HandleDownloadUrlAsync(mh, desired_model_id,
+                                                      desired_model_name);
+      }
       return model_service_->DownloadModelFromCortexsoAsync(
           model_and_branch[0], model_and_branch[1], desired_model_id);
     }