More generic, installable

[pamelafox]

Purpose

• Re-architected as an installable app, for easier use from other repositories and easier testing.
• Made a more generic function for generating ground truth data, to be used with other retrievers (like PostgreSQL)

Does this introduce a breaking change?

[X] Yes - Perhaps, depending on how folks have integrated the tool. But unlikely since it wasn't installable before.
[ ] No

Pull Request Type

What kind of change does this Pull Request introduce?

[ ] Bugfix
[X] Feature
[ ] Code style update (formatting, local variables)
[ ] Refactoring (no functional changes, no api changes)
[ ] Documentation content changes
[ ] Other... Please describe:

How to Test

• Ran all commands in README
• Ran tests