* impl queryinst
* bug free queryinst with crop and negative samples
* use detr hyperparameters
* pre-commit hooks
* modified dynamic_mask_head docstrings
* remove unused dropout in dynamic_mask_head
* add docstring for dice_loss
* add dice_loss unit test
* impl unit test for dynamic_mask_head
* update queryinst docstring and implementation
* stability update for dice_loss and dynamic_mask_head
* update for clarify
* bug free in case of num_proposals equal to zero
* detail docstrings
* fixed CI issues
* issues resolved
* add queryinst docs