feat(hash): added basic hashing functions to gain object ideas for the object storage

include/hash.h

@@ -0,0 +1,18 @@
+#ifndef HASH_H
+#define HASH_H
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <openssl/sha.h>
+
+typedef enum {
+    FileObject,
+    TreeObject,
+    LogObject
+} ObjectType;
+
+void object_hash(ObjectType, char*, char*);
+void hash_to_hex(const unsigned char*, char*);
+
+#endif // HASH_H