The tests are broken for packages referring to calculator.html

[304NotModified]

See these projects

https://github.com/search?q=repo%3Areqnroll%2FReqnroll.Actions%20calculator.html&type=code

https://specflowoss.github.io/Calculator-Demo/Calculator.html is no more and gives 404

related #6

[clrudolphi]

@gasparnagy would you happen to have a copy of the Calculator demo app that was running on SpecFlow's home page?

Would you mind if we use it/recreate it and host it on reqnroll.github.io?