qf: Add Norm3 utility function

boundary: Add cell-to-face basis routines

Drop JiT Guards in Most QF Source (#1540)

* backend - use pragma once

* gallery - drop source header guards

* ex - drop some qfunction source header guards

* fluids - drop guards on all sin

Drop JiT Guards in Most QF Source (#1540)

* backend - use pragma once

* gallery - drop source header guards

* ex - drop some qfunction source header guards

* fluids - drop guards on all singly included headers

* jit - drop most guards on backend JiT files

* sycl - drop extra header guards

* jit - enable #pragma once for QF source

* fluids - use #pragma once for util/helper qf source

* test - check different multiple includes

* fluids - fix odd include

* jit - update interface for building JiT string from multiple files

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Merge pull request #1537 from CEED/jeremy/pragma-once

Use #pragma once for non-JiT headers

minor - update copyright headers

fluids: Packing routines for 2D boundary setup

fluids: Change 2D qdata to use unpacking routines

fluids: Create generic MatMatN for square matrices

MatMat3 now uses MatMatN

Merge pull request #1337 from CEED/jrwrigh/sycl_local_name

fluids: Change variable name "local" to appease ocloc

fluids: Change variable name "local" to appease ocloc

- For reasons only God knows, ocloc (online compiler for OpenCL for
Intel hardware) doesn't approve of the variable name `local`. It
returns

fluids: Change variable name "local" to appease ocloc

- For reasons only God knows, ocloc (online compiler for OpenCL for
Intel hardware) doesn't approve of the variable name `local`. It
returns:
```
$ build/fluids-navierstokes -ceed /gpu/sycl/ref -options_file examples/fluids/tests-output/stats_test.yaml -test_type solver -compare_final_state_atol 1e-11 -compare_final_state_filename examples/fluids/tests-output/fluids-navierstokes-turb-spanstats-stats.bin
Command was: ocloc -q -spv_only -device pvc -64 -options "-cl-std=CL3.0 -Dint32_t=int" -file main.cl
[0]PETSC ERROR: --------------------- Error Message --------------------------------------------------------------
[0]PETSC ERROR: Error in external library
[0]PETSC ERROR: /home/jczhang/libCEED/backends/sycl/ceed-sycl-compile.sycl.cpp:73 in CeedJitCompileSource_Sycl(): ocloc reported compilation errors: {
Build failed with error code: -11
}
```

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fluids: Add QF value qdata packing/unpacking

Merge pull request #1225 from CEED/jrwrigh/fluids_state_enum

Fluids: Move to state enum for state functions

fluids: Move to state enum for state functions

Merge pull request #1149 from CEED/jrwrigh/newtonian_ddsgs

fluids: Data-driven SGS modeling

fluids: Add linear algebra tools to utils.h

fluids: Add symmetric eigensolver QF helper

- Adapted from https://github.com/jewettaij/jacobi_pd

Ken/idl (#1138)

* inflow sponge pushing p towards P0 compiles and runs but unknown yet whether it is effective or not

* looks like my first attempt at this is missing something as there is neglig

Ken/idl (#1138)

* inflow sponge pushing p towards P0 compiles and runs but unknown yet whether it is effective or not

* looks like my first attempt at this is missing something as there is negligible effect from Jacobian addition

* examples/fluids: IDL fixes and demo

* Fix IDL sign error and rename variables/clang-format
* Let newtonianwave.yaml use -reference_pressure and temperature
* Propagate P0 = reference.pressure

* Small tweak to add IDL to the 3 ramp parameters.

* fluids: Extract fluids binary vector load function

- Needs to be used in multiple places (for ICs and for testing data)

* fluids: Correct typo in previous commits

* fluids: Add IDL and newtonian wave test

* fluids: Rename Newtonian Wave --> Gaussian Wave

* fluids: Move RampCoefficient into utils

- Also change name to LinearRampCoefficient, as we may have different
kinds of ramps in the future

* fluids: Change IDL commandline options

* docs(fluids): Document internal damping layer

Co-authored-by: Jed Brown <jed@jedbrown.org>

* fluids: Add ScaleN QF utility

* fluids: Extract InternalDampingLayer QFunction helper

---------

Co-authored-by: Jed Brown <jed@jedbrown.org>
Co-authored-by: KennethEJansen <jansenke@colorado.edu>
Co-authored-by: James Wright <james@jameswright.xyz>

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Switch to clang-format (#1051)

* style - switch to clang-format

* ci - use newer libxsmm

* action - update format action

* format - consistent use of {} for multi-line if/for

* make - re

Switch to clang-format (#1051)

* style - switch to clang-format

* ci - use newer libxsmm

* action - update format action

* format - consistent use of {} for multi-line if/for

* make - remove stray newline

* make - simpler 'make format' target

* ci - use newer libxsmm

* doc - minor release note claification

* minor - minor fix

* minor - minor fix

* minor - minor fix

* minor - minor fix

* make format

* format - less aggressive alignment rules

* tidy - check for argument name mismatches

* fix newline

* format - mirror Ratel update to .clang-format

* fix merge error

* fix merge conflict

* fix merge error

* drop style in .phony list

* Update .clang-format

Co-authored-by: Jed Brown <jed@jedbrown.org>

* apply updated format

Co-authored-by: Jed Brown <jed@jedbrown.org>

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QF headers for typedefs and macros (#1036)

* jit - qf headers for typedefs and macros

* jit - smaller list of permitted files

* ceed - only include ceed.h in QF source

Merge pull request #1010 from CEED/jrwrigh/fluids_qfutils

fluids: Combine misc QF helpers into utils.h