Add support for export ofoperator Sub.

aidge_core/aidge_export_aidge/operator_export/sub.py

+from aidge_core.aidge_export_aidge.utils import operator_register, parse_node_input
+from aidge_core import ExportNode, generate_str
+from aidge_core.aidge_export_aidge import ROOT_EXPORT
+from pathlib import Path
+
+@operator_register("Sub")
+class Sub(ExportNode):
+    def __init__(self, node):
+        super().__init__(node)
+
+    def export(self, export_folder:Path, list_configs:list):
+        return list_configs
+
+    def forward(self, list_actions:list):
+        list_actions.append(generate_str(
+            ROOT_EXPORT / "templates/graph_ctor/sub.jinja",
+            name=self.name,
+            inputs=parse_node_input(self.node.inputs()),
+            **self.attributes
+        ))
+        return list_actions

aidge_core/aidge_export_aidge/templates/graph_ctor/sub.jinja

+{% filter indent(width=4, first=False) %}
+/*** {{name|upper}} ***/
+std::shared_ptr<Aidge::Node> {{name}} =
+        Aidge::Sub(
+            "{{name}}"
+        );
+{% include "./_set_input.jinja" %}
+graph->add({{name}});
+{% endfilter %}