operator(composite): add interface to force sequential execution of sub-operators

minor - style consistency

gallery - add scalar scaling qf

gallery - add identity to scalar qf

obj - add common CeedObjectDestroy

obj - move view tabs to CeedObj

internal - add CeedObject to handle common functionality

minor - update copyright to 2026

Use compiler definition for Intel oneAPI

`__INTEL_COMPILER` does no longer exist on LLVM-based Intel compilers.
The new macro is `__INTEL_LLVM_COMPILER`

https://www.intel.com/content/www/us/en/docs

Use compiler definition for Intel oneAPI

`__INTEL_COMPILER` does no longer exist on LLVM-based Intel compilers.
The new macro is `__INTEL_LLVM_COMPILER`

https://www.intel.com/content/www/us/en/docs/dpcpp-cpp-compiler/developer-guide-reference/2023-2/use-predefined-macros-to-specify-intel-compilers.html

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minor - move Ceed*GetNumViewTabs to public header

view - add Ceed*[Get/Set]ViewTabs for all objects

op - add SetNumViewTabs

deprecated.h: fix typo

assembly - add `CeedOperatorLinearAssembleGetNumEntries`

Rust and cuda clang support (#1873)

* Switch compiler to clang (not portable)

* test add_num

* compile with llvm tools

* not working linking

* not fixed

* Update ex1-volume.h

* update

* remov

Rust and cuda clang support (#1873)

* Switch compiler to clang (not portable)

* test add_num

* compile with llvm tools

* not working linking

* not fixed

* Update ex1-volume.h

* update

* remove global path

* changes

* changes 2

* crate works

* basic gpu rust compilation

* still not working

* rust source roots basic support

* nvrtc/clang selection

* cleanup

* update example (not working)

* add rust example

* fix merge issue

* delete temp files

* cleanup

* rust qfunc 2d array (needs doc)

* cleanup

* more cleanup

* downgrade back to c++11

* format

* final draft cleanup

* formatting + CUDA_CLANG -> GPU_CLANG

* Update cuda CEED_QFUNCTION_RUST

* fix python

* fix python and format

* format fr

* update comment

* fix python fr

* Apply error suggestions from code review

* update errors to libceed format

* Apply suggestions from code review

* add optimization flag

* remove line breaks

* Apply suggestions from code review

* avoid python in macro better

* add rust example

* format

* Apply suggestions from code review

* move rust example to own directory

* Simplify python exclusion logic

* re-fix python

* Update python/build_ceed_cffi.py

* change names and simplify makefile

* Revert "change names and simplify makefile"

This reverts commit 96e762f9f5d50d8ed9d3673e7fda850dfc390abe.

* Apply Jeremy's diff

* Simplify CeedCallSystem

* use rust-install llvm tools

* add gitignores

* update paths

* example absolute path

* fix comments

* apply partial diff

* add newline

* add makefile

* Update examples/rust-qfunctions/Makefile

* update makefile

---------

Co-authored-by: Allen MacFarland <alma4974@noether>

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interface - add deprecated warnings for old fn names

api - naming consistency for composite CeedOperator

gpu - collocated nodes/qpts for gen

hip - collocated nodes/qpts for shared

cuda - collocated nodes/qpts for shared

basis - pull BasisIsCollocated helper to interface level

Merge pull request #1856 from CEED/zach/remove-op-fallback-parent

ceed - replace usage of `ceed->op_fallback_parent` with `ceed->parent`

gpu - fix gen AtPoints transpose

gpu - reorder AtPoints shuffle to avoid bank conflicts

gpu - simplify atpoints if guards to prevent divergance