Add Indy.rb - Indianapolis Ruby Brigade

[swanson]

No longer actively doing a talk-based meetup but lots of legacy videos here

recordings: https://www.youtube.com/@Indyrb/videos site with descriptions other metadata: https://www.indyrb.org/ github org that might have metadata: https://github.com/indyrb

Anyone is welcome to turn this into a PR, I don't have the time at moment.

[marcoroth]

Awesome, thanks @swanson! 🙌🏼