Task-Based-Model.md

-We want to go from a for join model to a task based one. ![openmv-56th-analyse-task-based-backward-zoom](uploads/6caee6bf8f0266b668b3edc20068fdce/openmv-56th-analyse-task-based-backward-zoom.png)
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+We want to go from a for join model to a task based one. 
+![backward_transformer_block](uploads/41e0ed558170fe7d13bd7efbf848bb57/backward_transformer_block.png)
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