feat: Add an option to truncate long file names

[BrendanMesters]

Requested behaviour

I would like to have an option, lets say --truncate=max_size where it truncates file/dir names longer then the max_size to the max_size so that it does not clutter up the screen.

Example

$ eza
> a_very_long_file_name_which_should_probably_be_truncated.pdf
> bar
> foo

$ eza --truncate=10
> a_very_lon
> bar
> foo

It might also be nice to keep file extensions so instead have the behaviour be

$ eza --truncate=10
> a_very_lon.pdf
> bar
> foo

or

$ eza --truncate=10
> a_very.pdf
> bar
> foo

You would probably want to have a way to denote that these files have been truncated.

Use case

I often find myself storing books and papers under the full title of the book/paper, this usually messes up the table view provided by eza, it would be nice if there was an option which could help elevate this problem.