avoid io namespace clash

[douglowe]

I found that the VS Code debugging interface wouldn't work anymore with the latest version of this code. My error message was: “Fatal Python Error: can’t initialize sys standard streams”

Digging around (https://www.askpython.com/python/examples/fixed-cant-initialize-sys-standard-streams) I found a recommendation to avoid namespace clashes. I moved the io directory, to rocv_io, and everything works again.

The directory name rocv_io probably isn't helpful, but we should avoid the namespace clash. Let me know if you've a preferred directory name, and I can adjust the PR accordingly.

[kikkomep]

Thanks for pointing this out. We can include the change as is for now, since I’m planning to restructure the utils module and move the IO-related functionality there, possibly renaming the package to utils/io_helpers.