OrangeC: Add support for OrangeC compiler

Add compiler information modules.  Update the test suite.

Fixes: #25032
Co-authored-by: Brad King <brad.king@kitware.com>

Help/release/dev/orangec-compiler.rst

@@ -0,0 +1,5 @@
+orangec-compiler
+----------------
+
+* The OrangeC compiler is now supported with
+  :variable:`compiler id <CMAKE_<LANG>_COMPILER_ID>` ``OrangeC``.

Help/variable/CMAKE_LANG_COMPILER_ID.rst

@@ -35,6 +35,7 @@ Value                           Name
 ``MSVC``                        `Microsoft Visual Studio`_
 ``NVHPC``                       `NVIDIA HPC Compiler`_
 ``NVIDIA``                      `NVIDIA CUDA Compiler`_
+``OrangeC``                     `OrangeC Compiler`_
 ``OpenWatcom``                  `Open Watcom`_
 ``PGI``                         The Portland Group
 ``PathScale``                   PathScale
@@ -63,6 +64,7 @@ languages.
 .. _NVIDIA HPC Compiler: https://developer.nvidia.com/hpc-compilers
 .. _NVIDIA CUDA Compiler: https://developer.nvidia.com/cuda-llvm-compiler
 .. _Open Watcom: https://open-watcom.github.io
+.. _OrangeC Compiler: https://github.com/LADSoft/OrangeC
 .. _Small Device C Compiler: https://sdcc.sourceforge.net
 .. _Tiny C Compiler: https://bellard.org/tcc
 .. _Tasking Compiler Toolsets: https://www.tasking.com