Can you explain the steps to create a new Visual Studio solution for the Example DXA Core website.

It should contain projects:
- **DxaWebApp**  
  https://github.com/sdl/dxa-web-application-dotnet/tree/release/2.2/ 2.2.6_Hotfix
- **Sdl.Web.Modules.Core**  
  https://github.com/sdl/dxa-modules/tree/master/webapp-net/Core

Purpose explore with debugger. 

What I did:
- added above repo's to solution, changed web.config of WebApp (discovery url and secret with Tridion 9.0).

"Failed with load configuration file: ..\Site\bin\\config\cd_ambient_conf.xml". 

What should here be the content. Empty? It's better to have steps.