UNITY_NORETURN redefines noreturn, uses stdnoreturn.h which can break compatibility with C23 and is being defined when unnecessary

[jmuntaner-smd]

I have encountered some issues with the UNITY_NORETURN macro that I think that could be improved:

• Compiling with a GNU_C compiler with a version between C11 and C17, makes it so the macro ends up including the header <stdnoreturn.h> which defines noreturn to _Noreturn. If an external header that is included after unity.h uses attribute (noreturn)), it will get replaced by attribute (_Noreturn)) which is not valid.
• UNITY_NORETURN is only used if UNITY_EXCLUDE_SETJMP_H is not defined, but the macro is always being defined.
• Starting from version C23, _Noreturn is deprecated and the attribute [[ noreturn ]] should be used

My approach would be something like the following code:

/* UNITY_NORETURN is only required if we have setjmp.h. */
#ifndef UNITY_EXCLUDE_SETJMP_H
  #ifndef UNITY_NORETURN
    #if defined(__cplusplus)
      #if __cplusplus >= 201103L
        #define UNITY_NORETURN [[ noreturn ]]
      #endif
    #elif defined(__STDC_VERSION__) && __STDC_VERSION__ >= 201112L && __STDC_VERSION__ < 202311L
      /* _Noreturn keyword is used from C11 but deprecated in C23. */
      #if defined(_WIN32) && defined(_MSC_VER)
        /* We are using MSVC compiler on Windows platform. */
        /* Not all Windows SDKs supports <stdnoreturn.h>, but compiler can support C11: */
        /* https://devblogs.microsoft.com/cppblog/c11-and-c17-standard-support-arriving-in-msvc/ */
        /* Not sure, that Mingw compilers has Windows SDK headers at all. */
        #include <sdkddkver.h>
      #endif

      /* Using Windows SDK predefined macro for detecting supported SDK with MSVC compiler. */
      /* Mingw GCC should work without that fixes. */
      /* Based on: */
      /* https://docs.microsoft.com/en-us/cpp/porting/modifying-winver-and-win32-winnt?view=msvc-170 */
      /* NTDDI_WIN10_FE is equal to Windows 10 SDK 2104 */
      #if defined(_MSC_VER) && ((!defined(NTDDI_WIN10_FE)) || WDK_NTDDI_VERSION < NTDDI_WIN10_FE)
        /* Based on tests and: */
        /* https://docs.microsoft.com/en-us/cpp/c-language/noreturn?view=msvc-170 */
        /* https://en.cppreference.com/w/c/language/_Noreturn */
        #define UNITY_NORETURN _Noreturn
      #else /* Using newer Windows SDK or not MSVC compiler */
        #if defined(__GNUC__)
          /* The header <stdnoreturn.h> collides with __attribute(noreturn)__ from GCC. */
          #define UNITY_NORETURN _Noreturn
        #else
          #include <stdnoreturn.h>
          #define UNITY_NORETURN noreturn
        #endif
      #endif
    #elif defined(__STDC_VERSION__) && __STDC_VERSION__ >= 202311L
      /* Since C23, the keyword _Noreturn has been replaced by the attribute noreturn, based on: */
      /* https://en.cppreference.com/w/c/language/attributes/noreturn */
      #define UNITY_NORETURN [[ noreturn ]]
    #endif
  #endif
  #ifndef UNITY_NORETURN
    #define UNITY_NORETURN UNITY_FUNCTION_ATTR(__noreturn__)
  #endif
#endif

[mvandervoord]

cherry-picked into release branch.