Adding children in addition to parents

[ross-whatnot]

As discussed here, adding children to models / sources / snapshots. This is a simple addition to the logic that populates parents; basically, if x is one of y's parents, then y is one of x's children.

This allows writing rules like:

@rule(severity=Severity.CRITICAL)
def children_of_beta_models_should_be_beta_models(
    model: Model,
) -> RuleViolation | None:
    """Children of beta models should be beta models"""
    if "beta" in model.tags:
        for child in model.children:
            if "beta" not in child.tags:
                return RuleViolation(
                    message=f"Beta model {model.name} has a child that isn't a beta model {child.name}"
                )
    return None

This will need to be updated slightly for new evaluable types, but that should be easy.

[jochemvandooren]

Very nice! 🚀

[jochemvandooren]

Hey @ross-whatnot! I just merged #110, which means seeds are now included. Would you be able to make the small change (rebase + add children to seeds), then I can merge and release this new feature!

[ross-whatnot]

OK @jochemvandooren , that should be all hooked up now!

[jochemvandooren]

Awesome @ross-whatnot! I will release a new version ASAP