Add reaction system all units

[AntoniaBerger]

Add ReactionSystem to all unit operation types

Summary

This PR extends the reaction system architecture to support reactions in all unit operation types and phases. The main improvement is consolidating reaction handling across bulk liquid, liquid phase in particles, and solid phase in particles into a unified framework, replacing the previous separate cross-phase reaction model approach.

Key Changes

Unified Reaction Parameters

MassActionLawReaction now supports phase-specific rate constants:

• MAL_KFWD_BULK / MAL_KBWD_BULK - Forward/backward rates for bulk volume reactions
• MAL_KFWD_LIQUID / MAL_KBWD_LIQUID - Forward/backward rates for particle liquid phase
• MAL_KFWD_SOLID / MAL_KBWD_SOLID - Forward/backward rates for particle solid phase

Model Consolidation

• Separate MassActionLawReactionCrossPhase model (merged into MassActionLawReaction)
• Cross-phase logic is now handled uniformly within the main Mass Action Law model
• fluxGradCombined()` signature to compute reaction gradients for liquid and solid interactions

ReactionModel Interface Refactoring

Method naming and signatures updated for clarity:

• residualFluxAdd() -> residualLiquidAdd() (explicit phase indication)
• analyticJacobianAdd() ->analyticJacobianLiquidAdd()
• Deprecated numReactions() virtual method

Extended Unit Operation Support

All unit operations now support the complete ReactionSystem:

• Columns: 1D and 2D models
• General Rate Models: 1D, 2D, and Frustum variants
• Lumped Rate Models: With pores, without pores, and discontinuous Galerkin variants
• CSTR: Stirred Tank Model
• Multi-Channel Transport Model: MCTM
• Particle Models: General rate and homogeneous particles

Documentation Updates

• Adjusted Mass Action Law and Michaelis Menten documentation
• All unit operation and reaction interface documentation to reflect new parameter names

Further Changes

• BandedEigenSparseRowIterator for matrix operations
• Updated CellParameters

Testing

• Existing reaction tests updated to use new phase-specific parameters
• Add MAL test in CSTR which compares two separate reaction models with one reaction model
• Fixed (partly) Fix particle reactions #476

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Note: This is a breaking change for custom reaction configurations.

[AntoniaBerger]

Follow-up issue #544

• GRM reaction particle tests are not running consistently.
• GRM2D particle reaction tests are not running consistently.

[jbreue16]

Did these tests run before your changes or were they 'never' running?

[AntoniaBerger]

Did these tests run before your changes or were they 'never' running?

They were never running. They are part of the tests related to #476

[jbreue16]

This is so cool to have, thanks a lot !! :)
Maybe cadet/CADET-Verification#57 can be continued once we have nice test cases, e.g. from one of the planned publications?

[jbreue16]

I think this specification should be in a unique place, without an option to choose particle or unit operation level? I don't care if this should go in the unit or particle level though... @schmoelder ?

[jbreue16]

Did these tests run before your changes or were they 'never' running?

They were never running. They are part of the tests related to #476

in that case, ill just add the erroneous test to the testing meta issue #254