fix: renamed some symbols which were causing some compatibility problems

__FILE_NAME__ and GLFW_CONTEXT_DEBUG were causing problems in the CI
pipeline, thus I deemed them unreliable.
__FILE_NAME__ is not __FILE__ which is more universally used across
compilers.
and GLFW_CONTEXT_DEBUG has been replaced with GLFW_OPENGL_DEBUG_CONTEXT,
which is a legacy definition, which plays nicer on older platforms.
(like ubuntu)

src/io/window.c

@@ -21,7 +21,7 @@ static GLFWwindow* win = NULL;
 
 int window_init(void) {
 #ifndef NDEBUG
-	glfwWindowHint(GLFW_CONTEXT_DEBUG, GLFW_TRUE);
+	glfwWindowHint(GLFW_OPENGL_DEBUG_CONTEXT, GLFW_TRUE);
 #endif
 
 	// initialize the window