[inferno-ml-server] Fix argument position when applying scripts

[ngua]

He had an issue where inferno-ml-server expected function arguments to be in a specific order, but we can't always expect that (as a subtle bug recently demonstrated). So this fixes it to extract all arguments from the Lam in the VCFunction, then do a Map.lookup on all inputs/outputs/models to reconstruct the correct ordering to apply the function. This makes inferno-ml-server work with any argument ordering, which is far more resilient and doesn't rely on fragile ordering/sorting guarantees to be synchronized everywhere