Added memorybook to parsing and cleaned most of the files

libs/libft/testing/srcs/test_abs.c

@@ -0,0 +1,23 @@
+#include "libftest.h"
+
+void	compare_abs(int i, int ans)
+{
+	if (ft_abs(i) != ans)
+	{
+		RED	ft_printf("error: "); COLOREND
+			ft_printf("ft_abs(%i)", i);
+		RED	ft_printf(" gives "); COLOREND
+			ft_printf("%i", ft_abs(i));
+		RED	ft_printf(" instead of "); COLOREND
+			ft_printf("%i\n", ans);
+	}
+}
+
+void	test_abs(void)
+{
+	compare_abs(-1, 1);
+	compare_abs(0, 0);
+	compare_abs(-0, 0);
+	compare_abs(-1000, 1000);
+	compare_abs(-2147483647, 2147483647);
+}