Merge pull request #1500 from CEED/jrwrigh/advection_typo

fix(fluids): RHS stabilization term should be negative

fluids: Use MatCeed for Jacobian

test(fluids): Add stabilized explicit test for advection

Also uses consistent mass matrix

Merge pull request #1473 from CEED/jrwrigh/tau_choices

fluids: Shakib tau for advection

fixup! fluids: Change test for advection tau types

fluids: Change test for advection tau types

Merge pull request #1443 from CEED/jrwrigh/riemann_slip

fluids: Change slip boundary condition formulation

test(fluids): Test bc_slip

fluids: Change -bc_slip_x -> -bc_symmetry_x

Merge pull request #1361 from CEED/jrwrigh/external_sgs

fluids: Add external SGS DD inference capability

test: Add SGS data-driven sequential test

Merge pull request #1496 from CEED/jrwrigh/ksp_mass

Fluids: Fix mass operator for explicit timestepping, move to KSP for mass operator

fixup! fluids: Use KSP for explicit mass matrix

fluids: Fix mass matrix for explicit time stepping

The local vector should be initialized to zero so that all the essential
nodes (ie. strong boundary condition nodes) are not factored in for the
ma

fluids: Fix mass matrix for explicit time stepping

The local vector should be initialized to zero so that all the essential
nodes (ie. strong boundary condition nodes) are not factored in for the
matrix multiply. The PR associated with this commit should have a
document attached detailing why this is the case.

Previous tests used this incorrect mass matrix and so now fail. The
results for these tests are corrected as well.

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fluids: Use KSP for explicit mass matrix

Merge pull request #1491 from CEED/jrwrigh/fix_memleaks

fluids: Add missing OperatorApplyContextDestroy and change `if...SETERRQ` -> `PetscCheck`

fluids: Add missing OperatorApplyContextDestroy's

Merge pull request #1447 from CEED/jrwrigh/unify_advection

fluids: Unify 2D and 3D Advection problems

fluids: Merge 2D and 3D advection setup

Instead of `-problem advection` and `-problem advection2d`, there's just
`-problem advection` and the dimensionality is taken from the dm.

Merge pull request #1445 from CEED/jrwrigh/cosine_hill

fluids: Add cosine hill and skewed advection initial conditions

test(fluids): Advection skew initial condition

test(fluids): Advection cosine

Merge pull request #1203 from CEED/jrwrigh/smartsim

fluids: SmartSim Online Data-Driven SGS training

fluids: Add SmartSimDataDestroy

fluids: Add data-driven SGS training setup, TSMonitor

- Adds `smartsim_weak.c` to handle case where SmartRedis is not built