Packaging setup - Locally

[emilyashley]

We'd like to follow good, modern python packaging guidelines so let's explore what those are.
Before setting packaging and releasing up on PyPI (#7) we're going to want to test it out locally.

This ticket might be done when:

• We can check out how the packaging works locally and test against it
• You feel good about the experience of including this module in external code (i.e. EGS)

This might be a good place to start? https://packaging.python.org/en/latest/tutorials/packaging-projects/.
It's worth noting that we're using poetry so best practices might differ from pip recommendations.

[pkanal]

Looking into packaging with poetrywe have to run poetry build to create the .tar.gz and .whl files. When we publish we should use poetry publish --build to do it all in one step.

For testing I did the following:

1. Ran make build in honeycomb-opentelemetry-python
2. Added the tarball package to message-service in example-greeting-service
3. Imported our package functions and instrumented message-service
4. Ran message-service to test our distro

EGS branch: honeycombio/example-greeting-service@main...purvi/py-distro-local-packaging

Next steps: use the packaging commands with CircleCI to publish