Add move constructor and move assignment operator

include/rcp.h

@@ -70,6 +70,25 @@ public:
         return *this;
     }
 
+    rcp(rcp && other) noexcept : ptr(other.ptr)
+    {
+        other.ptr = nullptr;
+    }
+
+    rcp<T> & operator=(rcp && other) noexcept
+    {
+        if (ptr != other.ptr)
+        {
+            if (ptr)
+            {
+                ptr->rcp_dec();
+            }
+            ptr = other.ptr;
+            other.ptr = nullptr;
+        }
+        return *this;
+    }
+
     ~rcp()
     {
         if (ptr)