Updated project structure and makefile. Started creating frontend. Created csv database interphase

include/utils_op/arr.h

@@ -0,0 +1,5 @@
+#include <string.h>
+#include <stdlib.h>
+
+void insert_to_arr(char ***arr, size_t length, char *value);
+void free_arr(char **arr, int length);

include/utils_op/utils.h

@@ -0,0 +1,9 @@
+#include <stdio.h>
+#include <string.h>
+#include <ctype.h>
+#include <stdlib.h>
+
+void err_msg(char *msg);
+char *add_to_front(char **str1, char *str2);
+char *get_status_message(int status_code);
+char *to_lower(char *str);