Feat: Create snapshot tables on demand

[izeigerman]

This update makes sure that physical tables for snapshots are created lazily when they are actually needed. This is particularly helpful when using the model selector, in which case we create tables for selected models only.

Additionally, this update has a nice side effect of adding self-healing properties to the plan / apply flow by automatically re-creating snapshot tables if they happen to be missing.

[eakmanrq]

Since you added a public method usually these get a test added in test_integration. Specifically it would be good to test the object names functionality and possibly with the batching too. So it would be something like create table and view and make sure they show up and then filter and make sure the filter limits the number of results. If you want something quick you could just update the _get_data_objects call to instead use the new public method which would at least have us using that public path.

[izeigerman]

@eakmanrq added additional tests