Add validation for DirtyField strings (#5713)

* Add ValidateMemberAttribute, analyzer and test

* Use attribute on DirtyFields methods

* Defer member lookup

* Additional test case

* Add support for collection types

* Poke tests

* Revert "Add support for collection types"

This reverts commit 2b8f5534bd.

* break, not continue

* Cheaper attribute check with AttributeHelper

* Clean up unused helper method

---------

Co-authored-by: PJB3005 <pieterjan.briers+git@gmail.com>

Robust.Shared/Analyzers/ValidateMemberAttribute.cs

@@ -0,0 +1,15 @@
+using System;
+
+namespace Robust.Shared.Analyzers;
+
+/// <summary>
+/// Verifies that a string parameter matches the name
+/// of a member of the first type argument.
+/// </summary>
+/// <remarks>
+/// This just does a string comparison with the member name.
+/// An identically-named member on a different class will be
+/// considered valid.
+/// </remarks>
+[AttributeUsage(AttributeTargets.Parameter)]
+public sealed class ValidateMemberAttribute : Attribute;