QuickAccent: Add numero (№) symbol

[igrigorov]

Description of the new feature / enhancement

A useful addition to the ever-growing list of QuickAccent of characters would be the '№' (numero) symbol, which is used to prepend cardinal numbers in some languages, similarly to '#'. It is part of the regular phonetic Bulgarian kbd layout, in the place of #.

I would propose it to be included either on the 'N' key (due to visual/phonetic similarity) or the '#' key (due to functional similarity) or both.

Scenario when this would be used?

It would help me to enter the numero symbol, without having to change kbd layouts, when I need to prepend numbers in locale-specific way.

Supporting information

I believe this symbol is also used in French, which makes the userbase, that needs it, much bigger.