There are a few misconceptions in the Wiktionary proposal; with over 300 sign languages, there is a potential for over 300 translations for each concept. Sign languages are not to be linked to countries; there are countries with multiple indigenous sign languages. All languages have their own ISO-639 language code the same, ase for instance is the code for American Sign Language.
The characters of the SignWriting script are included in the same standard that includes all other scripts like Cyrillic or Devangari. The consequence is that as your computer supports UNICODE, your computer will be able to show texts written in SignWriting when you have a supporting font. At that Google may be your friend with its Noto Sans font and the Wikimedia Foundation may provision readers of its projects content.
A decade ago, there was a concerted effort from within the SignWriting movement to have Wikipedias in multiple sign languages. Much of what transpired can still be read on my blog. At the time the Wikimedia Foundation did not have the bandwidth to support the technical requirements in MediaWiki. It is why the deaf who express themselves with their sign language have no platform within the Wikimedia Foundation.
Thanks,
GerardM




