macOS: Initial Apple Silicon and x86_64 build support

* Refactor: add MACOSX_BUNDLE option to qt_add_executable in multiple CMakeLists.txt files
* #14045 macOS: Guard std::stacktrace usage and skip ucontext on Apple platforms
* #14045 macOS: Guard std::ispanstream with std::istringstream fallback
* #14045 macOS: Add vcpkg overlay triplets for osx and exclude grpc on osx
* #14045 macOS: CMake macOS build support and openzgy OpenMP-disable patch
* #14045 CI: Add macOS build workflow
* #14045 macOS: Use feature-test macros to detect <stacktrace> and <spanstream>
* #14045 macOS: Make MAX_STIMPLAN_LAYERS constexpr to fix arm64 link error
* #14045 CI: Ship README-macOS.txt with artifact to document Gatekeeper workaround
* #14045 CI: Pin macOS runner to macos-14 and set deployment target to 14.0
* #14045 CI: Move macOS runner to macos-15 and fix README step on configure failure

Fwk/AppFwk/cafPdmScripting/cafPdmScripting_UnitTests/CMakeLists.txt

@@ -26,7 +26,7 @@ set(PROJECT_FILES
     cafMockObjects.cpp
 )
 
-qt_add_executable(${PROJECT_NAME} ${PROJECT_FILES})
+qt_add_executable(${PROJECT_NAME} MACOSX_BUNDLE ${PROJECT_FILES})
 
 if(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
   target_compile_options(

Fwk/AppFwk/cafProjectDataModel/cafPdmCore/cafPdmCore_UnitTests/CMakeLists.txt

@@ -37,7 +37,7 @@ set(PROJECT_FILES
     TestObj.h
 )
 
-qt_add_executable(${PROJECT_NAME} ${PROJECT_FILES})
+qt_add_executable(${PROJECT_NAME} MACOSX_BUNDLE ${PROJECT_FILES})
 
 if(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
 

Fwk/AppFwk/cafProjectDataModel/cafPdmXml/cafPdmXml_UnitTests/CMakeLists.txt

@@ -25,7 +25,7 @@ set(PROJECT_FILES
     cafPdmPtrArrayTest.cpp
 )
 
-qt_add_executable(${PROJECT_NAME} ${PROJECT_FILES})
+qt_add_executable(${PROJECT_NAME} MACOSX_BUNDLE ${PROJECT_FILES})
 
 target_link_libraries(
   ${PROJECT_NAME} PRIVATE cafPdmXml ${QT_LIBRARIES} ${THREAD_LIBRARY}

Fwk/AppFwk/cafProjectDataModel/cafProjectDataModel_UnitTests/CMakeLists.txt

@@ -29,7 +29,7 @@ set(PROJECT_FILES
     gtest/gtest-all.cpp
 )
 
-qt_add_executable(${PROJECT_NAME} ${PROJECT_FILES})
+qt_add_executable(${PROJECT_NAME} MACOSX_BUNDLE ${PROJECT_FILES})
 
 if(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
   target_compile_options(

Fwk/AppFwk/cafTests/cafTestApplication/CMakeLists.txt

@@ -67,7 +67,11 @@ set(PROJECT_FILES
 )
 
 qt_add_executable(
-  ${PROJECT_NAME} ${PROJECT_FILES} ${MOC_SOURCE_FILES} ${QRC_FILES}
+  ${PROJECT_NAME}
+  MACOSX_BUNDLE
+  ${PROJECT_FILES}
+  ${MOC_SOURCE_FILES}
+  ${QRC_FILES}
   $<TARGET_OBJECTS:cafCommandFeatures> # Needed for cmake version < 3.12. Remove
   # when we can use target_link_libraries with OBJECT libraries
 )

Fwk/AppFwk/cafUserInterface/cafUserInterface_UnitTests/CMakeLists.txt

@@ -23,7 +23,7 @@ set(PROJECT_FILES
     gtest/gtest-all.cpp
 )
 
-qt_add_executable(${PROJECT_NAME} ${PROJECT_FILES})
+qt_add_executable(${PROJECT_NAME} MACOSX_BUNDLE ${PROJECT_FILES})
 
 target_link_libraries(
   ${PROJECT_NAME} PRIVATE cafUserInterface ${QT_LIBRARIES} ${THREAD_LIBRARY}