automatic mlx selection and setup

[michal1000w]

What does this change?

• This script automatically enables mlx on Apple Sillicon without any need of manual setup on the user side
• If mlx module is not installed it installs it automatically
• If no .safetensor weights are present it automatically transforms .pth weights into mlx
• Overall it makes using mlx a one click scenario

How was it tested?

2 computers with apple sillicon. Also it passes all synthetic tests

Checklist

• uv run pytest passes
• uv run ruff check passes
• uv run ruff format --check passes