Implement page navigation and waiting for the reload

The old content [is that this location](https://github.com/csf-dev/CSF.Screenplay/blob/fe046cc399588a1df5ae6480a925261aeb35fc11/Old/CSF.Screenplay.Selenium_old/Waits/WaitUntilThePageLoads.cs).  It needs reimplementing and testing in v2.0.0.