feat: fix cmakelists and create config

CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.20)
+cmake_minimum_required(VERSION 3.21)
 
 project(
     radhook
@@ -8,10 +8,13 @@ project(
 )
 
 option(BUILD_SHARED_LIBS "Build shared library" ON)
+option(RADHOOK_BUILD_TESTS "Build radhook tests" ${PROJECT_IS_TOP_LEVEL})
 
-include(CTest)
-enable_testing()
-add_subdirectory(tests)
+if(RADHOOK_BUILD_TESTS)
+    include(CTest)
+    enable_testing()
+    add_subdirectory(tests)
+endif()
 
 add_library(radhook
     src/radhook.cpp
@@ -78,7 +81,7 @@ install(TARGETS radhook
 )
 
 install(
-    FILES include/radhook.hpp
+    DIRECTORY include/radhook
     DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
 )
 
@@ -87,4 +90,25 @@ install(
     FILE radhookTargets.cmake
     NAMESPACE Radium::
     DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/radhook
+)
+
+include(CMakePackageConfigHelpers)
+
+configure_package_config_file(
+    ${CMAKE_CURRENT_SOURCE_DIR}/cmake/radhookConfig.cmake.in
+    ${CMAKE_CURRENT_BINARY_DIR}/radhookConfig.cmake
+    INSTALL_DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/radhook
+)
+
+write_basic_package_version_file(
+    ${CMAKE_CURRENT_BINARY_DIR}/radhookConfigVersion.cmake
+    VERSION ${PROJECT_VERSION}
+    COMPATIBILITY SameMajorVersion
+)
+
+install(
+    FILES
+        ${CMAKE_CURRENT_BINARY_DIR}/radhookConfig.cmake
+        ${CMAKE_CURRENT_BINARY_DIR}/radhookConfigVersion.cmake
+    DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake/radhook
 )

cmake/radhookConfig.cmake.in

@@ -0,0 +1,5 @@
+@PACKAGE_INIT@
+
+include("${CMAKE_CURRENT_LIST_DIR}/radhookTargets.cmake")
+
+check_required_components(radhook)