Add `business_is_qualified` to data

[nikhilwoodruff]

This was removed at some point unintentionally.

[MaxGhenis]

I couldn't find old code in either this repo or policyengine-us. Do you recall how we did this previously? Random %? Can we compare to TMD's approach?

[MaxGhenis]

Let's find some source for the share of businesses that are qualified.