* Implement IDisposable for derived types for WebApplicationFactory<T>
Add a protected Dispose method and a finalizer to WebApplicationFactory<T> for use in classes that derive from it and want to dispose of their own resources.
Resolves#7631.
* Address review feedback
Only dispose of fields if disposing is true.
* Clean up unnecessary workarounds on the build project.
* Remove the need to specify the content root relative to the solution
and use a solution based on an assembly level attribute on the test
assembly created at build time.
* Remove non parameterless constructors.
* Add support for creating specialized factories from the base factory
and keep track of "child" factories for disposal.
* Add support for creating clients that handle cookies and redirects
automatically.
Javier Calvarro Nelson
Martin Costello
Pranav K