cmake/install: install packages to libdir instead of datadir

The modular build has a static library that is architecture-dependent.
This library contains the module initialization symbol for the `ctre`
module.

Author: mathstuf

CMakeLists.txt

@@ -134,7 +134,7 @@ endif()
 configure_package_config_file(
   "${PROJECT_BINARY_DIR}/${PROJECT_NAME}-config.cmake.in"
   "${PROJECT_BINARY_DIR}/${PROJECT_NAME}-config.cmake"
-  INSTALL_DESTINATION "${CMAKE_INSTALL_DATADIR}/cmake/${PROJECT_NAME}"
+  INSTALL_DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}"
   NO_SET_AND_CHECK_MACRO
   NO_CHECK_REQUIRED_COMPONENTS_MACRO)
 
@@ -143,13 +143,13 @@ write_basic_package_version_file(ctre-config-version.cmake
   COMPATIBILITY SameMajorVersion)
 
 install(EXPORT ${PROJECT_NAME}-targets 
-  DESTINATION "${CMAKE_INSTALL_DATADIR}/cmake/${PROJECT_NAME}"
+  DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}"
   NAMESPACE ${PROJECT_NAME}::)
 install(
   FILES
     "${PROJECT_BINARY_DIR}/${PROJECT_NAME}-config-version.cmake"
     "${PROJECT_BINARY_DIR}/${PROJECT_NAME}-config.cmake"
-  DESTINATION ${CMAKE_INSTALL_DATADIR}/cmake/${PROJECT_NAME})
+  DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME})
 install(DIRECTORY include/ DESTINATION include
     FILES_MATCHING PATTERN *.hpp)
 
@@ -186,7 +186,7 @@ set(CPACK_RPM_PACKAGE_NAME "lib${PROJECT_NAME}-devel")
 set(PKG_CONFIG_FILE_NAME "${CMAKE_CURRENT_BINARY_DIR}/${PROJECT_NAME}.pc")
 configure_file("${CMAKE_CURRENT_SOURCE_DIR}/packaging/pkgconfig.pc.in" "${PKG_CONFIG_FILE_NAME}" @ONLY)
 install(FILES "${PKG_CONFIG_FILE_NAME}"
-	DESTINATION "${CMAKE_INSTALL_DATADIR}/pkgconfig"
+	DESTINATION "${CMAKE_INSTALL_LIBDIR}/pkgconfig"
 )
 
 list(APPEND CPACK_SOURCE_IGNORE_FILES /.git/ /build/ .gitignore .DS_Store)