[Add][Feature][Learning] Learning Rate Scheduler

LRScheduler for Optimizer optimization rate.

changed milestone to %aidge_core - v0.2.0

added LanguageC++ IssueMissing Feature PriorityHigh StatusTODO labels

assigned to @pineapple

added to epic &7 (closed)

created branch lrscheduler to address this issue

mentioned in merge request !87 (merged)

marked this issue as blocking #77 (closed)

marked this issue as blocking #81 (closed)

changed health status to on track

closed