Updated relation parsing for actions

[PedroDebevere]

This pull request introduces significant enhancements to how action references are processed and managed in the protocol model, along with some minor code improvements and test updates. The main focus is on refactoring and extending the logic for extracting references from action types and their options, making the code more modular and maintainable.

Refactoring and Extension of Action Reference Extraction

• Refactored IRelationEvaluator.GetRelations() in Action.cs to delegate reference extraction to new helper methods (ProcessParameterActionReferences, ProcessProtocolActionReferences, ProcessPairActionReferences, ProcessCommandActionReferences, ProcessResponseActionReferences), improving modularity and maintainability. Added support for extracting references from additional action types and their options, including complex option structures for aggregate, merge, swap, and WMI actions.

Improvements to ActionTypeOptions Parsing

• Fixed a parsing bug in JoinClass where the wrong variable was used for PID extraction, and enhanced WhereClass to support a third part for ID parsing, adding a nullable Pid property.

Test and Project File Updates

• Updated the test project to remove net6.0 from target frameworks and bumped MSTest to version 4.0.1 for improved compatibility.
• Updated test assertion syntax to use Assert.Throws<T>() instead of Assert.ThrowsException<T>() for consistency with the latest MSTest version.
• Minor formatting cleanup in the protocol test file for readability.