Modernise SUISA Sendemeldung infra

[hairmare]

I've recently shown nowplaying quite some 🐍 love and want to ensure that SUISA sendemeldung also benefits from that.

• configure CI (actions, dependabot) chore: linting and cleanup #68
• configure CD (pypi, semantic-release) chore: cd pipeline with semantic release and publish #169
• implement testing chore: implement a bunch of naive unittests #170
• deprecate python 3.8, switch to 3.11 on ubi9 feat: Update to Python3.11+Poetry on EL9 #306
• switch to poetry instead of soon to be deprecated setuptools feat: Update to Python3.11+Poetry on EL9 #306
• replace twine with poetry for pypi publishing feat: Update to Python3.11+Poetry on EL9 #306
• introduce quality gates (mypy, ...) chore(ci): Type checking with mypy during pre-commit #395
• harmonize logging with otel (+ further telemetry like traces and metrics)
• use radiorabe/python-minimal container image fix: use rabe base image and wheel multistage build #118
• cleanup README.md
  • should also dox feat: use data from MinIO hosted s3 buckets #289
• helm chart

Basically, what i wat for suisa_sendemeldung is for it to be in a state where consistent and regular rollouts + upgrades are a thing (like with nowplaying which is currently in a quite ok state).