build: Move triton to an optional dependency

[BrandonGroth]

Description of the change

This change moves triton to being an optional package. An additional guard was added, along with minor changes to the test script.

Related issues or PRs

N/A

How to verify the PR

Was the PR tested

Triton tests are now skipped on CI/CD rather than passing via a quick return.

tests/triton_kernels/test_triton_mm.py ssssssssssssssssssssssssssssss

Locally, on my machine I am getting 9x failures from one of the tests:

FAILED tests/triton_kernels/test_triton_mm.py::test_triton_matmul_fp[dtype_to_test4-1024] - AssertionError: assert (tensor(1725.2465, device='cuda:0') / tensor(32604.6211, device='cuda:0')) < 1e-05

Checklist for passing CI/CD:

• All commits are signed showing "Signed-off-by: Name <email@domain.com>" with git commit -signoff or equivalent
• PR title and commit messages adhere to Conventional Commits
• Contribution is formatted with tox -e fix
• Contribution passes linting with tox -e lint
• Contribution passes spellcheck with tox -e spellcheck
• Contribution passes all unit tests with tox -e unit

Note: CI/CD performs unit tests on multiple versions of Python from a fresh install. There may be differences with your local environment and the test environment.

[BrandonGroth]

So apparently, I have disabled the triton tests on CI/CD. There are no GPUs, so this is expected behavior.

tests/triton_kernels/test_triton_mm.py ssssssssssssssssssssssssssssss

[chichun-charlie-liu]

triton assertion error will be addressed by #141 , other than that, lgtm