Change to save netcdf files with 'h5netcdf' instead of netcdf4

[FBumann]

Description

Change to save netcdf files with 'h5netcdf' instead of netcdf4. Following xarray default

• Updated save_dataset_to_netcdf and related methods to accept the engine parameter.
• Changed default netCDF engine to h5netcdf across the codebase.
• Updated dependencies to include h5netcdf.

Type of Change

• Bug fix
• New feature
• Documentation update
• Code refactoring

Related Issues

Closes #(issue number)

Testing

• I have tested my changes
• Existing tests still pass

Checklist

• My code follows the project style
• I have updated documentation if needed
• I have added tests for new functionality (if applicable)

Summary by CodeRabbit

• New Features
  • Added ability to choose the NetCDF engine when exporting results and flow systems (defaults to h5netcdf).
• Bug Fixes
  • When optimization is infeasible, the flow system is now saved to NetCDF before the error is raised, improving debuggability.
• Chores
  • Updated dependency to use h5netcdf instead of netcdf4 for NetCDF writing.

[coderabbitai]

Note

Currently processing new changes in this PR. This may take a few minutes, please wait...

📥 Commits

Reviewing files that changed from the base of the PR and between 6041b58 and c4147f8.

📒 Files selected for processing (5)

• flixopt/calculation.py (1 hunks)
• flixopt/flow_system.py (2 hunks)
• flixopt/io.py (2 hunks)
• flixopt/results.py (2 hunks)
• pyproject.toml (1 hunks)

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✨ Finishing touches

• 📝 Generate Docstrings

🧪 Generate unit tests

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch feature/h5netcdf

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