Add Automation for PyPI

[NeonDaniel]

• [x] Ensure setup.py parameters are correct
• [x] Add publish_release, publish_test_build, and pull_master workflows
• [x] Ensure unit tests all pass
• [x] Open PR to NeonGeckoCom/dev
• [x] After PR is approved/merged, open separate PR incrementing version to next 0.x.0
• [x] Merge version bump PR
• [x] Merge PR to master closing this issue

Example automation available here: https://github.com/NeonGeckoCom/neon-tts-plugin-polly