refactor(common): moved common declerations to seperate files to avoid circular imports

include/common.h

@@ -0,0 +1,24 @@
+#ifndef COMMON_H
+#define COMMON_H
+
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <stdint.h>
+#include <sys/stat.h>
+#include <math.h>
+#include <zlib.h>
+#include <errno.h>
+#include <dirent.h>
+#include <unistd.h>
+#include <fcntl.h>
+
+#define IS_ALPHA(c) ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z'))
+#define IS_DIGIT(c) (c >= '0' && c <= '9')
+#define IS_ALNUM(c) (IS_ALPHA(c) || IS_DIGIT(c))
+#define IS_PUNCT(c) ((c >= 33 && c <= 47) || (c >= 58 && c <= 64) || (c >= 91 && c <= 96) || (c >= 123 && c <= 126))
+
+char* get_file_content(char*);
+char* get_file_content_with_size(char*, size_t*);
+
+#endif // COMMON_H