delete bin and obj directories during a clean
delete bin and obj directories during a clean

ASP-NET-Core-Boilerplate/Framework,ASP-NET-Core-Boilerplate/Framework,ASP-NET-MVC-Boilerplate/Framework,ASP-NET-Core-Boilerplate/Framework,ASP-NET-Core-Boilerplate/Framework,ASP-NET-MVC-Boilerplate/Framework