feat: Backward of Stack Operator

Added the backward pass implementation for the Stack operator. The backward pass extract gradients from the stacked output grad.

Key changes:

• Implemented StackOpImpl::backward() method to handle gradient propagation
• Added BackwardStep counter attribute to track backward pass position
• Extended unit tests to verify gradient computation

changed the description

added 1 commit

• 8e8606cc - feat: Implement backward() for stack, add unit test

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added 55 commits

• 8e8606cc...03de25a0 - 52 commits from branch eclipse/aidge:dev
• dba5e80d - Fix StackOp forward()
• 5e406854 - Add backward step counter and backward() declaration for stack op
• 01c74a6a - feat: Implement backward() for stack, add unit test

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added 1 commit

• 0c6e3302 - Remove debug print

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marked this merge request as ready

requested review from @olivierbichler

changed title from Stack backward to feat: Backward of Stack Operator

approved this merge request

enabled an automatic merge when all merge checks for 0c6e3302 pass

mentioned in commit 3ee75f49

merged

changed milestone to %aidge v0.6.0

added Feature 🚀 TopicOperator labels

assigned to @jeromeh

You forgot to add the name of the new attribute to EnumStrings<Aidge::StackAttr>::data[]

mentioned in merge request !345 (closed)