[MoE][PyTorch] Add mask-based MoE permutation

[hxbai]

Description

Add mask-based token permutation and local chunk permutation fused kernels. These kernels are implemented with OpenAI Triton.

Related commit in Megatron-LM NVIDIA/Megatron-LM@ac0474d

Fixes # (issue)

Type of change

• Documentation change (change only to the documentation, either a fix or a new content)
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Infra/Build change
• Code refractor

Changes

Please list the changes introduced in this PR:

• Non-breaking API changes in te.pytorch.permutation.moe_permute and te.pytorch.permutation.moe_unpermute
• Add new APIs of te.pytorch.permutation.moe_sort_chunks_by_indices

Checklist:

• I have read and followed the contributing guidelines
• The functionality is complete
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes