* Trivial - Add VS Code workspace
* Trivial - Add VSCode build task & extra ignore
On GNU/Linux, auto-generated .directory
files should be ignored.
* WIP #485 - Boilerplate for unit test project
* WIP #485 - Add test coverage (Remove/RemoveAll)
* WIP #485 - Implement RemoveAll
* Remove redundant logic, covered by IDictionary
Per the following, the contract for a generic IDictionary,
the Remove method already deals with non-existent keys.
https://docs.microsoft.com/en-us/dotnet/api/system.collections.generic.idictionary-2.remove?view=net-5.0#System_Collections_Generic_IDictionary_2_Remove__0_
* Resolve#485 - Add PurgeVariables methods
These are convenience methods upon ActivityExecutionContext
and WorkflowExecutionContext, consistent with their current APIs.
Also in this commit are tests for those simple methods.
There's a bit of test-scaffold as well included, such as:
* Autofixture Xunit2 integration
* New project for unit tests
* Customize attribute for avoiding crashes on Autofixture recursion
* Reusable specimen builder for creating IServiceProvider which
resolves services from Autofixture
* Custonize attribute for a parameter to use that ^^ specimen builder
