fluids: Fix memory leaks

As done in HONEE: https://gitlab.com/phypid/honee/-/merge_requests/18

fluids - Remove SGS, SmartSim, Torch (moved to HONEE)

ex - add links to Ratel, HONEE

Merge pull request #1606 from CEED/jrwrigh/ken_stg_additions

fluids: Add dyScale and dz to STG options

refactor(fluids): Rename norm -> normal in freestream

Also remove comment references to potential energy, which is no longer
included in the total energy definition.

fix(fluids): Correct Riemann HLL *_fwd functions

fluids: Add unit tests for Riemann solver functions

Merge pull request #1110 from CEED/zach/entropy-variables

Add Entropy Variables to libCEED fluids NS mini-app

fluids: Make commandline option arrays all upper case

fluids: Add h_scale_factor to STG options

fluids: Remove entropy variable from State struct

fluids: Proliferate entropy variables, add test

Co-authored-by: Zach Atkins <zacharyjayhawk@gmail.com>

fluids: Add Entropy state variable and tests

Co-authored-by: Zach Atkins <zacharyjayhawk@gmail.com>

refactor(fluids): Rename some booleans

fluids: Create BCDefinition, use for essential BCs

Merge pull request #1581 from CEED/jrwrigh/pytorch_external_sgs

fluids: Add PyTorch external DD SGS evaluation

test(fluids): Add SGS torch testing

docs(fluids): Spanwise stats

fluids: Force recompilation if Makefile changes

fluids: Use TORCH_DEVICE_CPU for sycl backends

On Sunspot, on-device inference is not working reliably. I'm not sure
exactly why at the moment (whether it's a libCEED backend issue or
something else

fluids: Use TORCH_DEVICE_CPU for sycl backends

On Sunspot, on-device inference is not working reliably. I'm not sure
exactly why at the moment (whether it's a libCEED backend issue or
something else).

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doc(fluids): Add documentation for pytorch SGS

fluids: Add log_events.c/h, PetscLogEvent for torch

To have the log_events accessbile to torch (in C++), I needed to
separate out the header file containing the extern PetscLogEvent
declarations. Wh

fluids: Add log_events.c/h, PetscLogEvent for torch

To have the log_events accessbile to torch (in C++), I needed to
separate out the header file containing the extern PetscLogEvent
declarations. While I was at it, I figured it'd be more clear to have a
separate log_events.c file as well to have the actual "storage" of the
PetscLogEvents and the RegisterLogEvents function itself.

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fluids: Add PyTorch external DD SGS evaluation

- Rename sequential_internal -> *_ceed

Merge pull request #1605 from CEED/jrwrigh/idl_explicit

fluids: Add IDL to RHSFunction_Newtonian

test(fluids): Modify test for IDL explicit

- Repurposing the Gaussian wave explicit test to also include IDL
testing
- Also modify the Advection skew tolerance slightly to pass on my local
machi

test(fluids): Modify test for IDL explicit

- Repurposing the Gaussian wave explicit test to also include IDL
testing
- Also modify the Advection skew tolerance slightly to pass on my local
machine (failed with 5.076e-10 on the avx/blocked backend)

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