add crete to ring buffer

bin/main.cpp

@@ -12,7 +12,8 @@ auto main(int argc, char *argv[]) -> int
 { 
   // patterns::ring_buffer
   {
-    hack::patterns::ring_buffer<int> rb(10);
+    hack::patterns::ring_buffer<int> rb;
+    rb.create(10);
     for (int i = 0; i < 10; ++i) rb.put(i);
     hack::log()(rb);
     hack::log()(rb.size());