Add Non-breaking hyphen U+2011 to Liberation Mono, Sans and Serif

[kimmus]

The Non-breaking Hyphen U+2011 is present only in Liberation Sans Narrow and is missing in Liberation Mono, Sans and Serif.

Could it be added to the remaining fonts of this family?

It is identical in appearance to the Hyphen-Minus (U+002D) and Hyphen (U+2010), so should be straightforward to add. And it is much more useful than the Hyphen (U+2010), which is redundant and hardly used but is present in all the fonts!