Created utils file

src/utils.c

@@ -0,0 +1,14 @@
+//
+// Created by marcsello on 05/11/2020.
+//
+
+#include "utils.h"
+
+bool contains(const uint8_t* data, uint64_t data_len, uint8_t what) {
+    for (uint64_t i = 0; i < data_len; i++) {
+        if (data[i] == what) {
+            return true;
+        }
+    }
+    return false;
+}