Install FindJavaScriptCore.cmake to simplify consumption

Now we don't need clients to manually specify `CMAKE_MODULE_PATH`

Signed-off-by: Juan Cruz Viotti <jv@jviotti.com>

config.cmake.in

@@ -7,6 +7,8 @@ if(NOT INCLUDEJS_COMPONENTS)
   list(APPEND INCLUDEJS_COMPONENTS engine)
 endif()
 
+list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}")
+
 foreach(component ${INCLUDEJS_COMPONENTS})
   if(component STREQUAL "engine")
     include(CMakeFindDependencyMacro)

src/engine/CMakeLists.txt

@@ -16,9 +16,17 @@ noa_library(PROJECT includejs NAME engine
   FOLDER "IncludeJS/Engine"
   PRIVATE_HEADERS context.h function.h error.h promise.h value.h
   SOURCES ${INCLUDEJS_ENGINE_SOURCES})
+
 if(INCLUDEJS_INSTALL)
   noa_library_install(PROJECT includejs NAME engine)
+  if(INCLUDEJS_BACKEND STREQUAL "JavaScriptCore")
+    install(FILES
+      "${PROJECT_SOURCE_DIR}/cmake/FindJavaScriptCore.cmake"
+      DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/includejs"
+      COMPONENT includejs_dev)
+  endif()
 endif()
+
 sourcemeta_includejs_add_compile_options(includejs_engine)
 
 if(INCLUDEJS_BACKEND STREQUAL "JavaScriptCore")

test/packaging/find_package/CMakeLists.txt

@@ -3,7 +3,6 @@ project(includejs_hello VERSION 0.0.1 LANGUAGES CXX)
 set(CMAKE_CXX_STANDARD 20)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
 set(CMAKE_CXX_EXTENSIONS OFF)
-list(APPEND CMAKE_MODULE_PATH "${PROJECT_SOURCE_DIR}/../../../cmake")
 find_package(IncludeJS REQUIRED)
 add_executable(includejs_hello hello.cc)
 target_link_libraries(includejs_hello PRIVATE includejs::engine)