Decaylanguage

* Parsing of decay files (aka .dec files):
- Introduced at test suite to verify that all EvtGen models are parsed correctly (half work done).
- Fixed an LHCb decay model name.
* CI and tests:
- Updates to pre-commit hooks and CI YAML files.

* Parsing of decay files (aka .dec files):
- Updated to the latest LHCb master file DECAY.DEC.
- Significant enhancements, improvements and simplifications to the parsing Lark grammar.
- Allow dec file Decay statements to effectively be able to set a particle as stable.
The package can now successfully parse all 8000-ish LHCb decay files.
- Test suite enhanced with various new tests.
* CI and tests:
- Updates to pre-commit hooks and CI YAML files.

* Parsing of decay files (aka .dec files):
- Addition of get methods and tests for recently added EvtGen keywords.
- Minor clean-up.
* Modeling for GooFit/AmpGen:
- Fix in generating code for mass combinations in cascade decays.
* CI and tests:
- Updates to pre-commit hooks and CI YAML files.

* Parsing of decay files (aka .dec files):
- Added support for many new EvtGen models and keywords (mostly for LHCb).
- Added first implementation of decay descriptors, decay chains represented as strings.
- Added support for empty or minimalistic decay files.
* Universal representation of decay chains:
- Several enhancements,e.g. for handling of decay descriptors.
- Improvements to type hints.
* CI and tests:
- Updates to pre-commit hooks and CI YAML files.

* CI and tests:
- Updates to pre-commit hooks and CI YAML files.

* Universal representation of decay chains:
- Better test coverage for dec and decay submodules.
* Modeling for GooFit/AmpGen:
- Major update to AmpGen2GooFit parsing.
* Miscellaneous:
- Moved over to using Ruff.
* CI and tests:
- Updates to pre-commit hooks and CI YAML files.