[function2] Add port version 4.0.0 (#9246)

ports/function2/CONTROL

@@ -0,0 +1,4 @@
+Source: function2
+Version: 4.0.0
+Homepage: https://github.com/Naios/function2
+Description: Improved drop-in replacement to std::function

ports/function2/disable-testing.patch

@@ -0,0 +1,14 @@
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index 684abe0..32a5cf6 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -75,7 +75,9 @@ if (FU2_IS_TOP_LEVEL_PROJECT)
+   install(EXPORT "${PROJECT_NAME}Targets"
+           NAMESPACE ${PROJECT_NAME}::
+           DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/${PROJECT_NAME}")
++endif()
+ 
++if(0)
+   # Setup CPack for bundling
+   set(CPACK_GENERATOR "ZIP")
+   set(CPACK_PACKAGE_VERSION_MAJOR ${PROJECT_VERSION_MAJOR})

ports/function2/portfile.cmake

@@ -0,0 +1,27 @@
+vcpkg_from_github(
+    OUT_SOURCE_PATH SOURCE_PATH
+    REPO Naios/function2
+    REF d2acdb6c3c7612a6133cd03464ef941161258f4e
+    SHA512 298f39db3c4e7a599e41fef71d1f953f3c5e20bc9f4af378c67bd47c10b126efd7be80be4ad919370a1151c8c5bc111ccd9054757a1aaf1ccf3f87ca958a7e3a
+    HEAD_REF master
+    PATCHES
+        disable-testing.patch
+)
+
+vcpkg_configure_cmake(
+    SOURCE_PATH ${SOURCE_PATH}
+    PREFER_NINJA
+)
+
+vcpkg_install_cmake()
+
+vcpkg_fixup_cmake_targets(CONFIG_PATH lib/cmake/${PORT})
+
+file(REMOVE ${CURRENT_PACKAGES_DIR}/Readme.md)
+file(REMOVE_RECURSE ${CURRENT_PACKAGES_DIR}/debug ${CURRENT_PACKAGES_DIR}/lib)
+
+# Put the installed licence file where vcpkg expects it
+file(MAKE_DIRECTORY ${CURRENT_PACKAGES_DIR}/share/${PORT})
+file(RENAME ${CURRENT_PACKAGES_DIR}/LICENSE.txt ${CURRENT_PACKAGES_DIR}/share/${PORT}/copyright)
+
+vcpkg_copy_pdbs()