Add functionality similar to `\acused` in Latex

[pohlm01]

In my text, I use a few abbreviations that I assume the reader to know already, but nevertheless, want to print them in the glossary. Therefore, it would be great to have an option to mark an entry as used even before it was actually used for the first time, such that in the text, only the short term is written.

I could imagine a flag like short-only in the print-glossary, e.g.

(key: "http", short: "HTTP", long: "Hypertext Transfer Protocol", short-only: true),

but I don't have a strong opinion on that.

[quachpas]

Hello @pohlm01,
I am in the process of adding more user control for first appeareance. For now, you can use

#gls(key, long: false)

For the first appeareance. It should work, and further calls to the same key won't print the long form anymore.

Note to self: land this with themes switching