Cast operator pybind

Context

Cast pybind was required for quantized onnx models import.

See aidge_onnx issue: aidge_onnx#42

Modified files

• pybind_Cast.cpp , Added pybind file;
• pybind_core.cpp , Added cast method definition;

python_binding/operator/pybind_Cast.cpp

+/********************************************************************************
+ * 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
+ *
+ ********************************************************************************/
+
+#include <pybind11/pybind11.h>
+
+#include <string>
+#include "aidge/backend/OperatorImpl.hpp"
+#include "aidge/data/Tensor.hpp"
+#include "aidge/operator/Cast.hpp"
+#include "aidge/operator/OperatorTensor.hpp"
+#include "aidge/utils/Types.h"
+
+namespace py = pybind11;
+namespace Aidge {
+
+void init_Cast(py::module &m) {
+    // Binding for CastOp class
+    auto pyCastOp = py::class_<Cast_Op, std::shared_ptr<Cast_Op>, OperatorTensor>(m, "CastOp", py::multiple_inheritance(),R"mydelimiter(
+        CastOp is a tensor operator that casts the input tensor to a data type specified by the target_type argument.
+        :param target_type: data type of the output tensor 
+        :type target_type: Datatype
+        :param name: name of the node.
+    )mydelimiter")
+        .def(py::init<DataType>(), py::arg("target_type"))
+        .def("target_type", &Cast_Op::targetType, "Get the targeted type, output tensor data type")
+        .def_static("get_inputs_name", &Cast_Op::getInputsName, "Get the names of the input tensors.")
+        .def_static("get_outputs_name", &Cast_Op::getOutputsName, "Get the names of the output tensors.");
+
+    // Binding for the Cast function
+    m.def("Cast", &Cast, py::arg("target_type"), py::arg("name") = "",
+        R"mydelimiter(
+        CastOp is a tensor operator that casts the input tensor to a data type specified by the target_type argument.
+        :param target_type: data type of the output tensor 
+        :type target_type: Datatype
+        :param name: name of the node.
+    )mydelimiter");
+}
+} // namespace Aidge
\ No newline at end of file