Ensure proper sorting by name for output files

[annagorshunova]

Is your feature request related to a problem? Please describe.

To enhance readability and ensure proper sorting by name, the numeric part of output file names should have a fixed width. This can be achieved by adding leading zeros to the numeric part, with four digits likely being sufficient.

Describe alternatives you've considered

I don't have any.

Additional context

No response

Code of Conduct

• I agree to follow this project's Code of Conduct

Are you willing to resolve this issue by submitting a Pull Request?

• Yes, I have the time, and I know how to start.
• Yes, I have the time, but I don't know how to start. I would need guidance.
• No, I don't have the time, although I believe I could do it if I had the time...
• No, I don't have the time and I wouldn't even know how to start.