add onnx model parse api

parser/onnx/onnx_parser.cc

@@ -41,7 +41,7 @@
 namespace ge {
 graphStatus PrepareBeforeParse(AclGrphParseUtil &acl_graph_parse_util,
                                const std::map<AscendString, AscendString> &parser_params,
-                               ge::Graph &graph, std::shared_ptr<domi::ModelParser> model_parser) {
+                               ge::Graph &graph, std::shared_ptr<domi::ModelParser> &model_parser) {
   GetParserContext().type = domi::ONNX;
   std::map<string, string> options;
   options.insert(std::pair<string, string>(string(ge::FRAMEWORK_TYPE), to_string(ge::ONNX)));