FEAT: add a cmake build

CMakeLists.txt

@@ -0,0 +1,14 @@
+cmake_minimum_required(VERSION 3.5)
+
+project(another-gl LANGUAGES C CXX)
+
+find_package(glm REQUIRED)
+find_package(spdlog REQUIRED)
+find_package(glfw3 REQUIRED)
+find_package(OpenGL REQUIRED)
+
+add_executable(another-gl
+    main.cpp glad.c renderer.cpp shader.cpp callbacks.cpp)
+
+target_include_directories(another-gl PUBLIC ${glm_INCLUDE_DIRS} ${glfw3_INCLUDE_DIRS} ${spdlog_INCLUDE_DIRS} ${CMAKE_SOURCE_DIR}/include)
+target_link_libraries(another-gl glfw glm::glm spdlog::spdlog OpenGL::GL)