[zxing-cpp] improve compatibility with modern OpenCV

ports/zxing-cpp/0001-opencv4-compat.patch

@@ -0,0 +1,30 @@
+diff --git a/opencv-cli/src/main.cpp b/opencv-cli/src/main.cpp
+index 63b6fd3..430dda6 100755
+--- a/opencv-cli/src/main.cpp
++++ b/opencv-cli/src/main.cpp
+@@ -135,14 +135,14 @@ int main(int argc, char** argv) {
+
+     }
+
+-    if (!videoCapture.set(CV_CAP_PROP_FRAME_WIDTH, captureWidth)) {
++    if (!videoCapture.set(cv::CAP_PROP_FRAME_WIDTH, captureWidth)) {
+
+         // Log
+         cerr << "Failed to set frame width: " << captureWidth << " (ignoring)" << endl;
+
+     }
+
+-    if (!videoCapture.set(CV_CAP_PROP_FRAME_HEIGHT, captureHeight)) {
++    if (!videoCapture.set(cv::CAP_PROP_FRAME_HEIGHT, captureHeight)) {
+
+         // Log
+         cerr << "Failed to set frame height: " << captureHeight << " (ignoring)" << endl;
+@@ -166,7 +166,7 @@ int main(int argc, char** argv) {
+         if (result) {
+
+             // Convert to grayscale
+-            cvtColor(image, grey, CV_BGR2GRAY);
++            cvtColor(image, grey, cv::COLOR_BGR2GRAY);
+
+             try {
+

ports/zxing-cpp/CONTROL

@@ -1,4 +1,4 @@
 Source: zxing-cpp
-Version: 3.3.3-2
+Version: 3.3.3-3
 Build-Depends: opencv[core]
 Description: Barcode detection and decoding library.

ports/zxing-cpp/portfile.cmake

@@ -8,6 +8,8 @@ vcpkg_from_github(
     REF 5aad4744a3763d814df98a18886979893e638274
     SHA512 a079ad47171224de4469e76bf0779b6ebc9c6dfb3604bd5dbf5e6e5f321d9e6255f689daa749855f8400023602f1773214013c006442e9b32dd4b8146c888c02
     HEAD_REF master
+    PATCHES
+      0001-opencv4-compat.patch
 )
 
 vcpkg_configure_cmake(