Better memory management of arrays and test sample generation

test/samples.c

@@ -0,0 +1,15 @@
+#include "../include/types.h"
+#include "include/samples.h"
+#include <stdlib.h>
+#include <time.h>
+
+lsort_array* generate_samples(int number) {
+    srand(time(NULL));
+    lsort_array* array = lsort_array_create();
+
+    for (int i = 0; i < number; i++) {
+        lsort_array_append(array, lsort_item_create(rand(), NULL));
+    }
+    
+    return array;
+};