Feature request: support for tsv files in pretty bat

For TSV files, the default `bat` behavior doesn't take data length into account to define header width.

I'd like to propose using `column` to format such files, like the following function:

```bash
# optionally have "--wrap never" for wider files
function() {
file="$1"
shift
column --keep-empty-lines --table -s $'\t' -o $'\t' "$file" | bat -l tsv --tabs 0 --file-name "$file" "$@"
}
```

Start by locating the pretty bat entry point and its current TSV handling. Compare it with the proposed column pipeline, including argument forwarding and optional wrapping; done means TSV input is aligned by column before being passed to bat.

Written by the indexing model from the issue text.