sorting txt list

I have a list in txt, e.g.:
– item A
– item B
– item C
etc.
It can be also in

html format, csv or any similar way created.

I would like to sort it exactly like do it this plugin (with big alphabet letters). Is it possible with this plugin? If no, how to do it in another way? I ask, because I can’t find any intersting ready-to-use solutions.