add onnx model parse api

inc/framework/omg/parser/model_parser.h

@@ -66,6 +66,17 @@ class ModelParser {
 
   /**
   * @ingroup domi_omg
+  * @brief Parse relevant data from memory and save it to graph
+  * @param [in] input Model file memory data and size
+  * @param [in|out] graph A graph for saving the model information after analysis
+  * @return SUCCESS
+  * @return FAILED
+  * @author
+  */
+  virtual Status ParseFromMemory(const char *data, uint32_t size, ge::Graph &graph) = 0;
+
+  /**
+  * @ingroup domi_omg
   * @brief Analyze network model data
   * @param [in] proto  network model
   * @param [in|out]  graph Save the network information after analysis