[WIP] [PyTorch] Proof-of-concept for using operation-based API in modules

[timmoon10]

Description

This is an experiment in replacing the internal implementation in te.Linear and te.LayerNormLinear with a te.Sequential.

It depends on several other PRs:

• https://github.com/NVIDIA/TransformerEngine/pull/1033
• https://github.com/NVIDIA/TransformerEngine/pull/1063
• https://github.com/NVIDIA/TransformerEngine/pull/1117
• https://github.com/NVIDIA/TransformerEngine/pull/1127

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
• [x] Code refractor

Changes

• Replace implementation of te.Linear with te.Sequential
• Replace implementation of te.LayerNormLinear with te.Sequential`

Checklist:

• [x] 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

[timmoon10]

/te-ci pytorch