Resolve "Retrieve terminal size via `shutil.get_terminal_size`"

Adds dantro.tools.TERMINAL_INFO dict that can now be updated via dantro.tools.update_terminal_info.

Can this MR be accepted?

• Implementation ready
• Tests added or adjusted (Tested indirectly)
• Documentation extended or updated

• Code quality
  • Changes follow coding guidelines
  • Checked code coverage on new and adjusted code

• Ready for merging
  • Pipeline passes without warnings
  • History cleaned-up or squash option set
  • Changelog entry added
  • Version number bumped
  • Reviewed & approved

Related issues

Closes #253 (closed)