[Draft] Backport all former meetups from meetup.com into this repo

[octaflop]

(This is a draft issue to get my thoughts down on this, feel free to update this issue, but be sure the issue is updated and reviewed before making any PRs)

What

• Get all the former meetups from meetup.com/SLCPython into this repo as "former events"

How

• Implement a "former events" tag or some kind of sorting system for meetups in the flatfile architecture.
• hard part: automate a way via the meetup api to import meetup events into this site. Optimally the script is automatically called during the workflow build process
  • Implementation Details (TODO):
    • a script that grabs meetup API? call it directly? act as the browser?
    • use golang?

Considerations

Cache Invalidation I can already tell this is gonna get ugly...

Why

• We want to ensure that the organization that is SLCPython / Utah Python can better-own this historic data of their humble little meetup. Meetup.com has undergone a number of tumultuous changes since our usage in 2014 so we need to safeguard against future issues by importing our events and owning them in a more distributed manner.
• as a bonus, we also want to continue doing this over time, which is why an optimal script would be able to show upcoming and old events automatically upon build.