Add a Rounding Mode Attribute to the BitShift Node

To improve rounding accuracy when exporting fully quantized models, a rounding mode attribute should be added to the BitShift operator. Instead of a direct right shift by N (value >> N), this attribute would allow an alternative approach: first shifting by N-1, adding 1, and then performing a final shift by 1. This helps reduce truncation errors and improve numerical stability in quantized computations.

added Enhancement ⭐ LanguageC++ labels

assigned to @noamzerah

mentioned in merge request !353 (merged)

mentioned in merge request aidge_backend_cpu!141 (merged)

added StatusReview Ready label

Needed in order to merge MR[aidge_quantization!46 (merged)]

closed