This PR has a large blast radius because it takes the final step and bumps up the Controller to be fully async.
We have historically done a piece-by-piece update, so all operations were already async but the controller interface was kept synchronous.
With this update, the controller is now fully async and all tests are updated.
Most places where the new C# compiler warns about function names not ending in `Async` were also adressed, giving a massive refactor change.
Functionally, no changes are done.
When performing queries with large inputs, there is a possibility that we reach the maximum number of possible parameters. If the query exceeds the maximum number of parameters the query fails.
This change uses a temporary table that will be created in the case the inputs exceed the total number available parameters, making sure the calls proceed as before with small inputs, but uses temporary tables on larger inputs.
Some tests were added to ensure the update works as expected, even with large inputs.