Create optional test data for headstart. #412
Description
For demoing and quick start purposes, providing test data will allow onboarding devs to have more context towards expected entity relationships created as part of headstart, as well as a complete interactive set of data for end-to-end testing from completion of the seeding processes.
The Habitat test data is a recommended starting point for creating headstart test data as it contains quite an extensive test data that developers may also be familiar with from XC.