[Scheduler] Add Scheduler.getNodeScheduling method and fix sequential function.

Feature

• Scheduling porvide a list of nodes sorted by the scheduling order

Fix

• parallel, sequential and residual function now work on python, issue with the binding and the py::explicitly_convertible function.

Refactor:

• Separate scheduling & forward in Scheduler object (linked with aidge_backend_cpu!5 (merged))

include/aidge/backend/OperatorImpl.hpp

@@ -20,7 +20,7 @@ namespace Aidge {
 class OperatorImpl {
 public:
     virtual void forward(){};
-    virtual void backward() {}
+    virtual void backward(){};
 
     /**
      * @brief Minimum amount of data from a specific input required by the
@@ -46,13 +46,19 @@ public:
     virtual NbElts_t getNbConsumedData(const IOIndex_t inputIdx) const = 0;
 
     /**
-     * @brief TOtal amount of produced data ready to be used on a specific output.
+     * @brief Total amount of produced data ready to be used on a specific output.
      *
      * @param outputIdx Index of the output analysed.
      * @return DimSize_t
      */
     virtual NbElts_t getNbProducedData(const IOIndex_t outputIdx) const = 0;
 
+    /**
+     * @brief Update the Consummer Producer system by simulating the consumption and production of i/o
+     *
+     */
+    virtual void updateConsummerProducer() = 0;
+
     virtual ~OperatorImpl() = default;
 };
 } // namespace Aidge