[Add] Round Operator

See Issue:aidge_quantization#42 (closed)

include/aidge/backend/cpu/operator/RoundImpl.hpp

+/********************************************************************************
+ * Copyright (c) 2023 CEA-List
+ *
+ * This program and the accompanying materials are made available under the
+ * terms of the Eclipse Public License 2.0 which is available at
+ * http://www.eclipse.org/legal/epl-2.0.
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *
+ ********************************************************************************/
+
+#ifndef AIDGE_CPU_OPERATOR_ROUNDIMPL_H_
+#define AIDGE_CPU_OPERATOR_ROUNDIMPL_H_
+
+#include <cstddef>  // std::size_t
+#include <memory>
+#include <tuple>
+#include <vector>
+
+#include "aidge/backend/cpu/operator/OperatorImpl.hpp"
+#include "aidge/operator/Round.hpp"
+#include "aidge/utils/Registrar.hpp"
+#include "aidge/utils/Types.h"
+
+namespace Aidge {
+// Operator implementation entry point for the backend
+using RoundImpl_cpu = OperatorImpl_cpu<Round_Op,
+    void(const std::size_t, const void*, void*)>;
+
+// Implementation entry point registration to Operator
+REGISTRAR(Round_Op, "cpu", Aidge::RoundImpl_cpu::create);
+}  // namespace Aidge
+
+#endif /* AIDGE_CPU_OPERATOR_ROUNDIMPL_H_ */