Add ADR referring to the usage of poetry for python dependency management

docs/decisions/0001-use-poetry-for-python-dependency-management.md

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+# Use Poetry for Python dependency management
+
+## Context and Problem Statement
+
+We want to use a tool to both manage project Python dependencies and packaging. Given the number of alternatives that 
+currently exist and the project requirements, which would be an appropriate choice?
+
+
+## Considered Options
+
+- [poetry](https://python-poetry.org/)
+- [pdm](https://pdm-project.org/latest/)
+- [pipenv](https://pipenv.pypa.io/en/latest/)
+- [rye](https://rye-up.com/)
+
+
+## Decision Outcome
+
+Chosen option: "poetry", because it meets the needs of the project and introduces minimal friction
+
+
+### Consequences
+
+- Good, because it is already known by the project development team
+- Good, because it covers all relevant use cases related to development and deployment for the project: 
+  - uses pinned versions for dependencies
+  - allows defining user scripts, for building custom commands
+  - specify development-only dependencies, which can be kept off the docker image
+  - allows installing only dependencies if needed, which is good for preserving the docker cache
+
+
+### pdm
+
+- Good, because it covers project use cases
+- Bad, because the development team does not have experience using it
+
+
+### pipenv
+
+- Good, because it covers project use cases
+- Bad, because the development team does not have experience using it
+
+
+### rye
+
+- Good, because it covers project use cases
+- Bad, because the development team does not have experience using it
+- Bad, because it is a very new tool, which may not be as stable as desired for the current project