create a new branch for storing data samples

**Is your feature request related to a problem? Please describe.**
this issue is to create a new branch to store sample data used by test code.

**Describe the solution you'd like**
this will make the main branch light weight

**Describe alternatives you've considered**
A clear and concise description of any alternative solutions or features you've considered.

**Additional context**
Add any other context or screenshots about the feature request here.

The issue names no files, tests, or entry points. First inspect how the test code currently accesses sample data and how repository branches are used; done means the samples are stored outside the main branch while the tests continue to access them successfully.

Written by the indexing model from the issue text.