Allow pytests to be run with a specific precision.

[monorimet]

Ideally, we would be able to configure which precision to use when using the pytest framework. This may cross into importer and shark_tank generation, but there are a few ways to incorporate the feature regardless.

We should have a set of importer config options that, when specified, will trigger a generation of the model artifacts locally if a matching configuration is not found in the cloud.

This will likely need to be implemented after SHARK config is refactored into .json model cards.