* Introduce asynchronous workflow runner and enhance workflow events.
- Added `AsyncWorkflowRunner` to enable asynchronous workflow execution and result tracking.
- Introduced new event arguments, such as `ActivityExecutedEventArgs` and `WorkflowStateCommittedEventArgs`.
- Expanded `WorkflowEvents` class to include `ActivityExecuted`, `ActivityExecutedLogUpdated`, and `WorkflowStateCommitted` events.
- Refactored event arguments into the `Elsa.Testing.Shared.EventArgs` namespace.
- Enhanced tests with `AsyncWorkflowRunner` and new event-driven workflow scenarios.
* Refactor event argument classes to unify namespace and simplify inheritance
* Add shared component DotSettings file to support namespace exclusions
