refactor(build): add static_library

set/myset.c

@@ -0,0 +1,28 @@
+#include "myset.h"
+
+#include <stdlib.h>
+
+set_s *set_new(size_t element_size) {
+	if (element_size == 0) {
+		return NULL;
+	}
+
+	set_s *set = (set_s *)malloc(sizeof(set_s));
+	if (set == NULL) {
+		return NULL;
+	}
+
+	// TODO: think about how to deal the free_value for each element
+
+	return set;
+}
+
+int set_add(set_s *set, void *elem);
+
+int set_remove(set_s *set, void *elem);
+
+int set_clear(set_s *set);
+
+int set_contains(set_s *set, void *elem);
+
+void set_free(set_s *set);