P1 legacy: collect data from /core/modules
Collect P1 legacy data from /core/modules - fix for plugwise/plugwise-beta#368
Dependencies: Default to python 3.11
Development
- Improved markdown (i.e. markup and contents), added linter for markdown & added code owners
- Replaced flake8 linting with ruff (following HA-Core)
- Improved testing on commit