Skin: Add a "filename-ellipsis-char" in [widget-panel]

[NealPierceGH]

Is there an existing request for this?

• I have searched the existing issues

Is your feature request related to a problem?

When a filename is too long to fit in a panel display, MC nicely "ellipsize" it by placing a tilde ~ in the middle.
The problem is that this char is sometimes quite hard to spot in a listing and it would be nice if this char could be configured in skins.

Describe the solution you'd like

It would be nice to have the following

• Add a filename-ellipsis-char key in [widget-panel] section of some-skin.ini files
• Possibly add a ellipsis key in [filehighlight] to set the color that would take precedence over any other highlighting key as this an important indicator. With ellipsis = (empty), this would not set any color and respect any configured/default highlighting

Describe alternatives you've considered

No response

Additional context

No response