feat: Add CMake project to make sure that headers can be compiled, individually

CMakeLists.txt

@@ -0,0 +1,36 @@
+cmake_minimum_required(VERSION 3.11)
+
+project(GTAV-Classes)
+
+include(CheckIncludeFileCXX)
+
+set(CMAKE_CXX_EXTENSIONS OFF)
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+set(CMAKE_REQUIRED_QUIET ON)
+
+set(OK TRUE)
+
+file(GLOB HEADERS "*.hpp")
+
+message(STATUS "")
+
+foreach(HEADER ${HEADERS})
+	get_filename_component(FILENAME ${HEADER} NAME)
+	check_include_file_cxx("${HEADER}" ${FILENAME}_OK)
+
+	if(${FILENAME}_OK)
+		message(STATUS "${FILENAME} OK!")
+	else()
+		set(OK FALSE)
+		message(SEND_ERROR "${FILENAME} failed to compile!")
+	endif()
+endforeach()
+
+message(STATUS "")
+
+if(NOT OK)
+	file(READ "${CMAKE_CURRENT_BINARY_DIR}/CMakeFiles/CMakeError.log" LOG)
+	message(STATUS ${LOG})
+endif()