fix(compat.opencv): link ole32 on Windows (CoCreateGuid in cv::tempfile)

/MT fix cleared the CRT mismatch; the last consumer-link error was a single
unresolved external __imp_CoCreateGuid (opencv_core cv::tempfile), a Win32 COM
API in ole32.lib. Add -lole32 to the Windows ldflags (clang-cl resolves it off
the Windows SDK lib path). Everything else — clang-cl build, install, layout,
static libs — already links.

Author: Sunrisepeak

pkgs/c/compat.opencv.lua

@@ -138,6 +138,9 @@ package = {
             "-Llib", "-Llib/opencv4/3rdparty",
             "-lopencv_imgcodecs", "-lopencv_imgproc", "-lopencv_core",
             "-llibpng", "-llibjpeg-turbo", "-lzlib",
+            -- Win32 system import libs OpenCV core pulls (resolved off the Windows
+            -- SDK lib path clang-cl adds): ole32 for CoCreateGuid (cv::tempfile).
+            "-lole32",
         } },
     },
 }