fix(opencl): fix windows GLEW linking

lib/libvideostitch_OpenCL.cmake

@@ -66,7 +66,8 @@ set(CL_BACKEND_SOURCES
 if(NOT ANDROID)
   find_package(OpenCL REQUIRED)
   if(WINDOWS)
-    find_library(GLEW NAMES glew32s PATHS ${CMAKE_EXTERNAL_DEPS}/lib/GL NO_DEFAULT_PATH)
+    find_library(GLEW "glew32" PATH "${VCPKG_PATH}\\${VCPKG_TARGET_TRIPLET}-static\\lib" NO_DEFAULT_PATH)
+    include_directories("${VCPKG_PATH}\\${VCPKG_TARGET_TRIPLET}-static\\include")
   else()
     find_package(GLEW REQUIRED)
   endif()
@@ -114,6 +115,11 @@ endif(DISABLE_OPENCL_SPIR)
 
 # different names on different implementations of find_package(OpenCL)
 vs_lib_link_libraries("PUBLIC_OPENCL" ${OpenCL_LIBRARIES})
-vs_lib_link_libraries("OPENCL" ${OpenGL_LIBRARIES} ${OPENGL_LIBRARIES} GLEW::GLEW)
+vs_lib_link_libraries("OPENCL" ${OpenGL_LIBRARIES} ${OPENGL_LIBRARIES})
+if(WINDOWS)
+  vs_lib_link_libraries("OPENCL" ${GLEW})
+else()
+  vs_lib_link_libraries("OPENCL" GLEW::GLEW)
+endif()
 
 set(BACKEND_OBJECTS_OPENCL )