Added CI setup, fixed error with torch.load(), fixed GPU tests crash with runners & centralize pytest config

[afloresep]

PR to create the CI setup, fix some minor issue with torch and centrilized the testing config.

1. Added a CI workflow.
2. Skipped tests that require CUDA through imports so they don’t crash on GitHub runners
3. Added centralized pytest configuration in pytest.ini and removed the old tool.pytest.ini_options section from pyproject.toml
4. Fixed error with torch.load when loading the weights in the tests