Add support for Databricks Free Edition

[nkarpovdb]

We want to support FE (Free Edition) with the same set of stages, to the extent possible.

Here are some things we need to consider:

1. Lakebase is not currently in FE. It will be soon, but for now we need something that makes sense without it.
2. Raw Data stage may be too heavy for FE. We need a static version of this stage. It would be nice if we could somehow wrangle the timestamp column to shift with current time so that we don't appear to have an old static dataset.
3. We probably need some added parameters to address different compute restrictions and cost. For example we don't want an always on job to exhausted FE resources etc. so schedule based triggers (every 10min etc.)

[nkarpovdb]

#39