Add language icon

[Fred-Vatin]

Hi,

I love some Code Styler features. I wonder if it would be possible to add them.

Icon and language name in header

There are options to enable one of them or both.

Header instead of tab

An option to display a header instead of tab when there is a title or the above options are enabled.

Language Border Color

An option to add a border color matching the language icon color.