Resolve "Refactoring WOLF installation system"

Closes #451 (closed)

CMakeLists.txt

@@ -453,6 +453,7 @@ install(EXPORT ${PLUGIN_NAME}Targets DESTINATION lib/${PLUGIN_NAME}/cmake)
 
 
 # Configure the package installation
+include(CMakePackageConfigHelpers)
 configure_package_config_file(
   ${CMAKE_SOURCE_DIR}/cmake_modules/${PLUGIN_NAME}Config.cmake.in
   ${CMAKE_CURRENT_BINARY_DIR}/${PLUGIN_NAME}Config.cmake