update project structure & create Makefile

include/csv.h

@@ -0,0 +1,17 @@
+#include <stdbool.h>
+#include "main.h"
+
+#ifndef CSV_H_INCLUDED
+#define CSV_H_INCLUDED
+
+typedef struct {
+  uint32_t pupilNum;
+  char crsNo[MAX_COURSE_NO_LEN];
+  char description[MAX_COURSE_DES_LEN];
+  bool alternate;
+} CSV_LINE;
+
+int count_lines(char data_dir[]);
+CSV_LINE *csvReader(char data_dir[], size_t size);
+
+#endif