Is your feature request related to a problem? Please describe.

No response

Describe the solution you'd like

It would be nice if I could write something like this

RuleForEach(obj => obj.Items)
    .WhereAsync(async item => await CheckSomeAsyncConditionWhichNeedsExternalDependenciesAsync(item))
   .MustAsync(...);

Describe alternatives you've considered

No response

Additional Context

No response