Use the ordered nodes API in Sequential() in order to preserve the user declaration nodes order

Solve part of the issue aidge#111 (closed) and solve issue aidge#113 (closed).

src/data/DataProvider.cpp

@@ -42,8 +42,8 @@ Aidge::DataProvider::DataProvider(const Aidge::Database& database, const std::si
 
     // Compute the number of bacthes depending on mDropLast boolean
     mNbBatch = (mDropLast) ?
-                static_cast<std::size_t>(std::floor(mNbItems / mBatchSize)) :
-                static_cast<std::size_t>(std::ceil(mNbItems / mBatchSize));
+                (mNbItems / mBatchSize) :
+                static_cast<std::size_t>(std::ceil(mNbItems / static_cast<float>(mBatchSize)));
 }
 
 std::vector<std::shared_ptr<Aidge::Tensor>> Aidge::DataProvider::readBatch() const