Merge pull request #21579 from TolyaTalamanov:at/handle-errors-in-iebackend

[G-API] Handle errors in IEBackend & modeling tool

* Handle errors in IEBackend & modeling tool

* Handle exceptions in callback

* Add const cv to exception

modules/gapi/samples/pipeline_modeling_tool/pipeline.hpp

@@ -46,6 +46,7 @@ public:
     void compile();
     void run(double work_time_ms);
     const PerfReport& report() const;
+    const std::string& name() const { return m_name;}
 
     virtual ~Pipeline() = default;