fix: add garak/data to pip package

[jmartin-tech]

Ensure pip install package include all garak/data files.

Verification

• Install via pip repository reference in a clean env (example base on ubuntu:latest docker container)

apt-get update; apt-get install python3 python3-venv git
python3 -m venv garak
source garak/bin/activate
python -m pip install -U git+https://github.com/jmartin-tech/garak.git@fix/include-data-in-packaging

• ls -lah garak/lib/python3.12/site-packages/garak/data
• Verify files such as misp_descriptions.tsv are reporting as on disk

[leondz]

lgtm. thanks