[add] reciprocal operation
Context
add Reciprocal operation implementation on CPU backend: aidge_core#324 (closed)
Major modifications
- clean: remove unused includes in ReLU implementation
- fix: bad calls to Array helpers
- Reciprocal operation
- add: CPU implementation
- add: forward kernel
➡️ - add: backward kernel
⬅️ - add: unit-tests for forward and backward functions
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Edited by Maxence Naud