Package suggestions (Python 3 compatibility, fixes to docs, etc) #2

Hi! I have added some suggestions to #6 for the Qencode python library

While using the Qencode library we encountered a few issues with the client library. While suggesting changes there weren't any configurations for styling, linting, or CI - so I volunteered to add those!

You will be able to deprecate https://github.com/qencode-dev/qencode-api-python3-client and just use one package with this. Also future contributors will be able to follow consistent code formatting / linting / add more tests and etc.

Please let me know if you have any questions about the changes, the tooling, configuring / setting up CI / publishing packages with the PR.