internal - add some missing CeedCall

interface - add Ceed*ReturnCeed

internal - remove some extra void* casts

internal - more updates for const

sycl: resolve const variance

minor - tidy LoadSourceToBuffer internals

internal: const for source paths

Add const to CeedQFunctionLoadSourceToBuffer output argument. If we
had Result, this would look like

let const source_buffer = CeedQFunctionLoadSourceToBuffer()?;

internal: const for source paths

Add const to CeedQFunctionLoadSourceToBuffer output argument. If we
had Result, this would look like

let const source_buffer = CeedQFunctionLoadSourceToBuffer()?;

The caller is free to cast in the const when passing the output variable
if they want this semantic:

let mut source_buffer = CeedQFunctionLoadSourceToBuffer()?;

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internal - const for CeedQFunctionGetSourcePath

backend - add const to QF name acessor

interface - add const to GetName functions

qf/op - add QFunction/OperatorFieldGetData

internal - reduce reaching into private structs

Merge pull request #1482 from CEED/zach/operator-is-at-points

Add `CeedOperatorIsAtPoints`

Use `CeedOperatorIsAtPoints` instead of private data member

internal - should error when trying to use QF flops, not retrieve

Add `CeedOperatorIsAtPoints`

op - add CeedOperatorHasTensorBases

minor - use CeedSize_FMT and similar changes

rstr - use CeedSize for vec len checks

Merge pull request #1463 from CEED/jeremy/memcheck-strides

CEED_STRIDES_BACKEND related updates

rstr - fix signature of GetLayout

rstr - add CeedElemRestriction[Get,Set]LLayout

rstr - expand note about CEED_STRIDES_BACKEND

CeedMatrixPseudoinverse utility function (#1251)

* Added CeedMatrixPseudoinverse utility and use it CeedBasisGetCollocatedGrad

* Used pseudoinverse utility in CeedBasisApplyAtPoints

* Update d

CeedMatrixPseudoinverse utility function (#1251)

* Added CeedMatrixPseudoinverse utility and use it CeedBasisGetCollocatedGrad

* Used pseudoinverse utility in CeedBasisApplyAtPoints

* Update description of CeedMatrixPseudoinverse function

Co-authored-by: Jeremy L Thompson <jeremy@jeremylt.org>

* Used pseudoinverse utility in CeedBasisCreateProjectionMatrices

* Updated inline comments

* Added inline comment

* Round matrix-matrix product to zero in CeedBasisCreateProjectionMatrices

* increased tolerance in ex1-volume/src/main.rs

---------

Co-authored-by: Jeremy L Thompson <jeremy@jeremylt.org>

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op - CeedOperatorGetFieldByName don't error if field not found