[Sparse Attention][Performance] Accelerate the performance of sparse attention + Benchmark

[sxjscience]

We are having ongoing efforts about supporting sparse attention in GluonNLP: #1395. To better accelerate related kernels, we can compare the performance of these potential solutions, including:

• Use BlockSparse kernel to implement the operator
  We may try out these implementations
  • https://github.com/openai/blocksparse
  • https://github.com/huggingface/pytorch_block_sparse
  • TVM Block Sparse: https://github.com/ceruleangu/Block-Sparse-Benchmark
• Directly implement window attention
  • Use CUTLASS and implement our own version
  • Use TVM + Ansor: https://tvm.apache.org/docs/tutorials/auto_scheduler/tune_conv2d_layer_cuda.html#sphx-glr-tutorials-auto-scheduler-tune-conv2d-layer-cuda-py

[sxjscience]

@ZiyueHuang Created the issue here about how we may use TVM to accelerate the speed.