New tabulation framework

[EvertBunschoten]

Proposed Changes

Improved the code structure for table generation, made the table generators for NICFD and FGM more object-oriented, allowing for easier integration of new refinement methods and applications, and makes the code easier to read and use.

New features to the tabulation base class:

• Supports 2D and 3D tables depending on the number of controlling variables in the config.
• Refine 2D table or table level based on target number of nodes, making it easier to control the size of the table.
• Refine within specified bounds of thermochemical variables interpolated on the table nodes.
• Option to smooth the data in the table in order to improve convergence in CFD simulations.
• Manually specify table level values for 3D tables.
• Write VTK file of the 2D table or table levels so the table content can be inspected with ParaView.

New features to the FGM tabulation class:

• Scale refinement based on the gradients of thermochemical state variables. This can be useful for things like chemical source terms, which are difficult to interpolate accurately.
• Apply additional refinement in chemical equilibrium.

PR Checklist

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• I am submitting my contribution to the develop branch.
• I have updated the list of python modules in required_packages.txt and environment.yml, if necessary.
• I have properly commented my changes.
• I have updated the documentation, if necessary.
• I have added a test case that demonstrates my contribution, if necessary.