[Feature] Use Jekyll collections for listing items on webpages

[davetcoleman]

Setup this plugin https://jekyllrb.com/docs/collections/

To list out the following types:

• People (maintainers / core contributors / alumni)
• Robots
• Related Projects (?)

Benefits: alphabetization easier, changing People's status easier, more stable code

[tylerjw]

@L4co77 could you look into this and advise if we should do this?

[L4co77]

Sure, we can use it. We have it on Picknik for different 'posts', so we can create any collection we want: