Add Gemini protocol support

[DanielChesters]

Hello,

Maybe it can be a good thing to add the support of the Gemini protocol in Mataroa. You can see the documentation about Gemini at https://gemini.circumlunar.space/

[sirodoht]

Hey @DanielChesters!

Gemini support would be pretty cool. Maybe at some point in the future. I'm mostly convinced, just not sure when I'll be able to learn the Gemini protocol.