* Refactor buggy SignalRequestHandler
For some reason, the following code is problematic:
await DecryptToken()
.BindAsync(GetWorkflowInstanceAsync)
.BindAsync(CheckIfExecutingAsync)
.MapAsync(ResumeWorkflowAsync);
Basically, any lambda in the BindAsync and MapAsync could execute even after the containing method returned
* Implement better message handler registration without adding multiple IMediator services
* Abstracted Mediator service registration methods.
* Add Liquid support for JObject.
