Replace is not compatible with optional inputs

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What commit version of aidge do you use

• aidge_core: 0.2.1

Problem description

Optional inputs and inputs that can both be parameters or attributes are badly handled and thus currently incompatible with the GraphView::replace() member function.

This is an important issue for any recipe using the replace functionality.

Reproducible example code

Create a graph

flowchart LR
ReLU#0-->ReLU#1-->ReLU#2

and replace the ReLU#1 Operator in the center by a Slice Operator with starts, ends, axes and steps parameters provided.

While a graph like this is expected:

flowchart LR
ReLU#0-->Slice-->ReLU#2

the graph will end up like so:

flowchart LR
ReLU#0 & ReLU#0 & ReLU#0 & ReLU#0 & ReLU#0 --> Slice --> ReLU#2

Even though starts, ends, axes and steps parameters were provided.