[llvm] [SYCL] Add property set types and JSON representation (PR #147321)

[LLVM Continuous Integration via llvm-commits]

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `clang-ppc64-aix` running on `aix-ppc64` while building `llvm` at step 5 "build-unified-tree".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/64/builds/5179

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 5 (build-unified-tree) failure: build (failure)
...
627.769 [4369/10/1077] Building CXX object lib/ObjectYAML/CMakeFiles/LLVMObjectYAML.dir/XCOFFYAML.cpp.o
629.145 [4368/10/1078] Building CXX object lib/ObjectYAML/CMakeFiles/LLVMObjectYAML.dir/WasmYAML.cpp.o
629.252 [4367/10/1079] Linking CXX static library lib/libLLVMAggressiveInstCombine.a
629.838 [4366/10/1080] Linking CXX executable bin/clang-tblgen
629.988 [4365/10/1081] Linking CXX static library lib/libLLVMInstCombine.a
630.128 [4364/10/1082] Building CXX object lib/ObjectYAML/CMakeFiles/LLVMObjectYAML.dir/XCOFFEmitter.cpp.o
630.199 [4363/10/1083] Building CXX object lib/Frontend/Atomic/CMakeFiles/LLVMFrontendAtomic.dir/Atomic.cpp.o
630.341 [4362/10/1084] Building CXX object lib/ObjectYAML/CMakeFiles/LLVMObjectYAML.dir/WasmEmitter.cpp.o
630.711 [4361/10/1085] Building CXX object lib/ObjectYAML/CMakeFiles/LLVMObjectYAML.dir/ELFEmitter.cpp.o
630.896 [4360/10/1086] Building CXX object lib/Frontend/Offloading/CMakeFiles/LLVMFrontendOffloading.dir/PropertySet.cpp.o
FAILED: lib/Frontend/Offloading/CMakeFiles/LLVMFrontendOffloading.dir/PropertySet.cpp.o 
/home/llvm/llvm-external-buildbots/clang.19.1.2/bin/clang++ -DEXPERIMENTAL_KEY_INSTRUCTIONS -DGTEST_HAS_RTTI=0 -D_DEBUG -D_GLIBCXX_ASSERTIONS -D_LARGE_FILE_API -D_XOPEN_SOURCE=700 -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -D__SHORT_FILE__=\"PropertySet.cpp\" -I/home/llvm/llvm-external-buildbots/workers/aix-ppc64/clang-ppc64-aix/build/lib/Frontend/Offloading -I/home/llvm/llvm-external-buildbots/workers/aix-ppc64/clang-ppc64-aix/llvm-project/llvm/lib/Frontend/Offloading -I/home/llvm/llvm-external-buildbots/workers/aix-ppc64/clang-ppc64-aix/build/include -I/home/llvm/llvm-external-buildbots/workers/aix-ppc64/clang-ppc64-aix/llvm-project/llvm/include -mcmodel=large -fPIC -Werror -Werror=date-time -Werror=unguarded-availability-new -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wmissing-field-initializers -pedantic -Wno-long-long -Wc++98-compat-extra-semi -Wimplicit-fallthrough -Wcovered-switch-default -Wno-noexcept-type -Wnon-virtual-dtor -Wdelete-non-virtual-dtor -Wsuggest-override -Wstring-conversion -Wmisleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -O3 -DNDEBUG -std=c++17  -fno-exceptions -funwind-tables -fno-rtti -UNDEBUG -pthread -MD -MT lib/Frontend/Offloading/CMakeFiles/LLVMFrontendOffloading.dir/PropertySet.cpp.o -MF lib/Frontend/Offloading/CMakeFiles/LLVMFrontendOffloading.dir/PropertySet.cpp.o.d -o lib/Frontend/Offloading/CMakeFiles/LLVMFrontendOffloading.dir/PropertySet.cpp.o -c /home/llvm/llvm-external-buildbots/workers/aix-ppc64/clang-ppc64-aix/llvm-project/llvm/lib/Frontend/Offloading/PropertySet.cpp
/home/llvm/llvm-external-buildbots/workers/aix-ppc64/clang-ppc64-aix/llvm-project/llvm/lib/Frontend/Offloading/PropertySet.cpp:23:48: error: captured structured bindings are a C++20 extension [-Werror,-Wc++20-extensions]
   23 |         for (const auto &[PropName, PropVal] : PropSet) {
      |                                                ^
/home/llvm/llvm-external-buildbots/workers/aix-ppc64/clang-ppc64-aix/llvm-project/llvm/lib/Frontend/Offloading/PropertySet.cpp:21:37: note: 'PropSet' declared here
   21 |     for (const auto &[CategoryName, PropSet] : PSRegistry) {
      |                                     ^
1 error generated.
632.104 [4360/9/1087] Building CXX object lib/Frontend/Offloading/CMakeFiles/LLVMFrontendOffloading.dir/OffloadWrapper.cpp.o
632.629 [4360/8/1088] Building CXX object lib/ObjectYAML/CMakeFiles/LLVMObjectYAML.dir/yaml2obj.cpp.o
635.547 [4360/7/1089] Building CXX object lib/Transforms/Scalar/CMakeFiles/LLVMScalarOpts.dir/AnnotationRemarks.cpp.o
635.736 [4360/6/1090] Building CXX object lib/Frontend/Offloading/CMakeFiles/LLVMFrontendOffloading.dir/Utility.cpp.o
637.614 [4360/5/1091] Building CXX object lib/Transforms/Scalar/CMakeFiles/LLVMScalarOpts.dir/BDCE.cpp.o
637.772 [4360/4/1092] Building CXX object lib/Transforms/Scalar/CMakeFiles/LLVMScalarOpts.dir/AlignmentFromAssumptions.cpp.o
639.916 [4360/3/1093] Building CXX object lib/ObjectYAML/CMakeFiles/LLVMObjectYAML.dir/ELFYAML.cpp.o
640.149 [4360/2/1094] Building CXX object lib/Transforms/Scalar/CMakeFiles/LLVMScalarOpts.dir/CallSiteSplitting.cpp.o
643.032 [4360/1/1095] Building CXX object lib/Transforms/Scalar/CMakeFiles/LLVMScalarOpts.dir/ADCE.cpp.o
ninja: build stopped: subcommand failed.

```

</details>

https://github.com/llvm/llvm-project/pull/147321