Initial setup of repository

[ploomiz]

Issue: https://github.com/Eppo-exp/eppo/issues/2907

Description

This PR does the basic repository setup for the Python SDK. It does not include any randomization code.

• Added CHANGELOG, README
• Test setup - using tox and pytest
• Added a github workflow for running tests and lint checks.
• Use black as the formatter
• Added a pull request and issue template

Testing

1. Uploaded the project to TestPyPI (a test version of the real package manager)

python3 -m twine upload --repository testpypi --skip-existing dist/*

2. Verified I can install the package from a virtual env

mkdir testenv
python3 -m venv testenv
source testenv/bin/activate
(testenv) ❯ python3 -m pip install --index-url https://test.pypi.org/simple/ --no-deps eppo-server-sdk
(testenv) ❯ python3
>>> from eppo_client import example
>>> example.add_one(1)
2

[schmit]

lgtm