Refactor data/events directory

[Matty Stratton]

This was part of the redesign but i think we need it now.

Currently structure is a flat directory with a single yaml for every event.

New would be like this:

data/events/2024-chicago/main.yml

Which allows us to break up the yaml files like...
data/events/2024-chicago/program.yml etc

First step is to figure out how big of a change the path changes will be.

Assuming that is no big deal, then refactor the program page to use the program.yml if it exists, and fall back to the main if not.

This is needed for #13658

[Matty Stratton]

There's one block that loads the data file which is used everywhere; in theory this could be fixed and then search/replace all templates:

{{- $e := (index $.Site.Data.events (index (split (.Permalink | relURL) "/") 2)) -}}

[Matty Stratton]

So maybe like this (given index function is variadic—it accepts a variable number of arguments):

(index .Site.Data.events $EVENT "main")

[Matty Stratton]

{{- 
$e := 
(index $.Site.Data.events (index (split (.Permalink | relURL) "/") 2) "main") 
-}}

[Matty Stratton]

Need a simple script (one time) to make the directory changes

#!/bin/bash
FILES=/data/events/*

for f in $FILES
do
if [[ "$f" == *\.yml ]]
then
  fbname=$(basename f$ .yml)
  mkdir $fbname
  mv $f $fbname/main.yml
fi
done

[Matty Stratton]

Okay so this was way easier than I thought; I am pretty close to a PR.