MofNColumn, to show actual counts of completed/total instead of a percentage

[ptmcg]

Something like this:

class MofNCompleteColumn(ProgressColumn):
    """Renders completed #/total #"""

    def render(self, task: "Task") -> Text:
        """Show data completed/data total."""
        total_size = filesize.decimal(int(task.total))
        return Text(f"{int(task.completed):{total_size}d}/{int(task.total)}")

To display 0/200, 1/200, 2/200, etc.

[ptmcg]

Looking further, this is similar to the current DownloadColumn, but without the conversion to floats and binary units.

Submitting PR renaming class to DownloadCountsColumn, and added optional separator arg, defaulting to "/". Allows callers to display as "1/200", "1:200", "1 of 200", etc.