This adds validation to DirtyField<T> method calls to make sure that the passed fieldName string matches the name of a field on the target component.

This is implemented as an attribute that can be applied to method parameters, ValidateMemberAttribute. The analyzer uses the first generic type argument of the method as the target - this is a little funky, but it doesn't seem to be possible to pass T into the attribute in the method signature, so this was the best I could do. It builds a HashSet of all the members of the target type, then iterates through the parameters of the method invocation looking for the ValidateMember attribute. If it finds one, it checks the compile-time constant string value of the parameter against the member HashSet and reports an error if it doesn't find a match.

Note that this will not catch situations where two components with identically-named members are swapped. In the screenshot example, if GunComponent did have a field named "NextAttack", passing in nameof(MeleeWeaponComponent.NextAttack) would not cause an error (either in the analyzer or at runtime) because the string would match. I don't think that can be addressed without some major changes to the way delta fields are implemented.

This PR applies the attribute to the DirtyField<T>(EntityUid, Component, ...) method of EntityManager and the DirtyField<T>(EntityUid, Component, ...) and DirtyField<T>(Entity<T>, ...) proxy methods of EntitySystem.

Resolves #5706