* Start switch to System.Text.Json
* Work on switching to System.Text.Json
* Main work on STJ refactor
* Fix build errors
* Run formatting
* Delete unused file
* Use legacy for two factor providers
* Run formatter
* Add TokenProviderTests
* Run formatting
* Fix merge issues
* Switch to use JsonSerializer
* Address PR feedback
* Fix formatting
* Ran formatter
* Switch to async
* Ensure Enums are serialized as strings
* Fix formatting
* Enqueue single items as arrays
* Remove CreateAsync method on AzureQueueService
