Add initial producer code

include/cppkafka/topic.h

@@ -0,0 +1,26 @@
+#ifndef CPPKAFKA_TOPIC_H
+#define CPPKAFKA_TOPIC_H
+
+#include <string>
+#include <memory>
+#include <boost/optional.hpp>
+#include <librdkafka/rdkafka.h>
+
+namespace cppkafka {
+
+class Topic {
+public:
+    Topic(rd_kafka_topic_t* handle);
+
+    std::string get_name() const;
+
+    rd_kafka_topic_t* get_handle() const;
+private:
+    using HandlePtr = std::unique_ptr<rd_kafka_topic_t, decltype(&rd_kafka_topic_destroy)>;
+
+    HandlePtr handle_;
+};
+
+} // cppkafka
+
+#endif // CPPKAFKA_TOPIC_H