fluids: Combine misc QF helpers into utils.h

fluids: Add missing license boilerplate

doc - update style since I'm touching the file

test: Update data for fluids blasius tests

examples/fluids: Add STGInflow Jacobian QFunction

examples/fluids: Protect against divide-by-0

- When running with strong enforced stg, the spectrum calc can try and
divide by 0 (distance to the wall)
- This behavior doesn't break anything per

examples/fluids: Protect against divide-by-0

- When running with strong enforced stg, the spectrum calc can try and
divide by 0 (distance to the wall)
- This behavior doesn't break anything persay, but this commit makes it
much easier to debug floating point exceptions.

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examples/fluids: Fill node_locs if file not specified

- Ensures that strong STG has correct mesh_ynode locations even if the
mesh spacing is specified via the algorithmic method

FIXUP: Use BI inflow jacobian if not blasius inflow

- Previously did not use the BoundaryIntegral_Jacobian for any cases

examples/fluids: ICs from STG Profile

examples/fluids: Fix plate mesh generation

examples/fluids: free qfunctions for in/outflow Jacobian

examples/fluids: Viscous flux for BoundaryIntegral jacobian

examples/fluids: Add viscous flux to POutflow Jacobian

examples/fluids: Move POutflow_Jac to State variables

- Verified to be exactly the same as before, just using the State
structs and methods

doc: Update blasius BC description

examples/fluids: Refine STGInflow_blasius.dat

examples/fluids: Add viscous flux to StrongInflowBI

examples/fluids: Add viscous flux to POutflow BC

examples/fluids: Move blasius outflow to newtonian.h

examples/fluids: Move StrongSTGbcFunc to newtonian.h

- Requires significant changes to how the stg_context is passed to the
the strong bc

examples/fluids: Cleanup code

- Code either commented out, or left over from previous debugging

examples/fluids: Abstract State and helper funcs

examples/fluids: Pass solution gradient to boundary QFs

fluids - add preloading (#997)

* fluids - add preloading

* fluids - fix accidentally dropped line

Co-authored-by: James Wright <james@jameswright.xyz>

* fluids - get wallclock from stage lo

fluids - add preloading (#997)

* fluids - add preloading

* fluids - fix accidentally dropped line

Co-authored-by: James Wright <james@jameswright.xyz>

* fluids - get wallclock from stage log, FRAGILE

Co-authored-by: James Wright <james@jameswright.xyz>

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Merge pull request #991 from CEED/jeremy/memcheck-qf-ctx

Memcheck QFContext