Add the Gungbe language (guw) to monolingual codes.
It is supported in translatewiki, and there is a Wikipedia Incubator in it.
It is needed for lexemes as well as for native names of Gungbe people
The alphabet is a variant of Latin, and the native name is "gunbge".
Sample use: missing
Previous discussion:
The language is legit, but it's not really necessary to add it to Wikibase, because judging by the current translatewiki stats, very soon it will be added to core MediaWiki.
The request lacks a sample per https://www.wikidata.org/wiki/Help:Monolingual_text_languages#When_a_language_code_is_missing
If "very soon" actually happens, we can remove it again.