ops.md

## CUDA ops

We implement common CUDA ops used in detection, segmentation, etc.

- AssignScoreWithK
- BallQuery
- BBoxOverlaps
- CARAFE
- CrissCrossAttention
- ContextBlock
- CornerPool
- Deformable Convolution v1/v2
- Deformable RoIPool
- DynamicScatter
- GatherPoints
- FurthestPointSample
- FurthestPointSampleWithDist
- GeneralizedAttention
- GroupPoints
- KNN
- MaskedConv
- NMS
- PSAMask
- RoIPointPool3d
- RoIPool
- RoIAlign
- RoIAwarePool3d
- SimpleRoIAlign
- SigmoidFocalLoss
- SoftmaxFocalLoss
- SoftNMS
- Synchronized BatchNorm
- Voxelization
- ThreeInterpolate
- ThreeNN
- Weight standardization
- Correlation