Dressipi CRUD queries are dummy implemented; Fixes T99 and T131

Summary: Dressipi CRUD queries are dummy implemented; Fixes T99 and T131

Test Plan: manual

Reviewers: sale

Subscribers: buda, sale

Maniphest Tasks: T131, T99

Differential Revision: https://memgraph.phacility.com/D9

include/utils/string_buffer.hpp

@@ -0,0 +1,35 @@
+#pragma once
+
+#include <string>
+
+namespace utils
+{
+
+class StringBuffer
+{
+public:
+    StringBuffer &operator<<(const std::string &str)
+    {
+        data += str;
+        return *this;
+    }
+
+    StringBuffer &operator<<(const char *str)
+    {
+        data += str;
+        return *this;
+    }
+
+    StringBuffer &operator<<(char c)
+    {
+        data += c;
+        return *this;
+    }
+
+    std::string &str() { return data; }
+
+private:
+    std::string data;
+};
+
+}