Aioraven

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* Perform strict mypy typing check
* Move warning classes from protocols to device module
* Add support for Python 3.12
* Introduce custom RAVEn exceptions

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* Add new 'synchronize' function for stream-based devices

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* More consistency fixes for pyproject.toml

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* Consistency fixes for pyproject.toml

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* Switch to standards-based python packaging
* Declare support for Python 3.11

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* Fix IntervalChannel string conversion