Node attributes are not cloned

Fix issue #190 (closed).

src/graph/Node.cpp

@@ -407,18 +407,18 @@ void Aidge::Node::resetConnections(bool includeLearnableParam) {
 ///////////////////////////////////////////////////////
 
 Aidge::NodePtr Aidge::Node::cloneSharedOperators() const {
-    return std::make_shared<Node>(mOperator, mAttrs);
+    return std::make_shared<Node>(mOperator, std::make_shared<DynamicAttributes>(*mAttrs));
 }
 
 Aidge::NodePtr Aidge::Node::cloneSharedProducers() const {
     std::shared_ptr<Operator> op =
             (mOperator->type() == Producer_Op::Type) ? mOperator : mOperator->clone();
 
-    return std::make_shared<Node>(op, mAttrs);
+    return std::make_shared<Node>(op, std::make_shared<DynamicAttributes>(*mAttrs));
 }
 
 Aidge::NodePtr Aidge::Node::clone() const {
-    return std::make_shared<Node>(mOperator->clone(), mAttrs);
+    return std::make_shared<Node>(mOperator->clone(), std::make_shared<DynamicAttributes>(*mAttrs));
 }
 
 std::set<Aidge::NodePtr> Aidge::Node::getNodeDelta(int delta, std::set<Aidge::NodePtr> nodeSee) {