Enforce ordering of items in `schemas` and `lenses` during `BindLineage`

[sdboyer]

173 removed certain native CUE logic that sorted lenses and schemas in a lineage into a known order. To replace this, we need to add checks to BindLineage() that enforce ordering invariants on the raw lineage inputs.

[sdboyer]

@undef1nd this is the one you were aiming to pick up, right?

[undef1nd]

Yes, I think it's one of those errors handling improvements you suggested.