Currently, the only way to handle when a validation fails is by
`assert()`, which either throws an exception or doesn't. That means that
every time a user wants to handle the results, they must use try-catch
blocks, which may add some overhead.
This commit introduces the `ResultQuery` class that wraps a `Result`
object, providing an alternative to exception-based validation. This
allows users to handle results directly without try-catch blocks.
I’m taking a risky move here using the old method `validate()`, but I
can’t think of a better name for this method.
