Add Faerie Argyle Rainbow Flag

When doing my initial research on the rainbow flag, everything was focusing on Gilbert Baker with very little focusing on the other members who made the flag. This felt a little sus to me, which is why I added this flag to my list of things to investigate further.

Now I've done that further investigation. Lynn made her claims a year after Gilbert Baker's death, which is also sus. It's sus all round. Ultimately I've tried to fairly represent both accounts, which basically meant rewriting the Gilbert Baker page as well.

Motivation and Context

Fixes #2.

Adds another historic flag to the site, and one that I've not seen too much coverage about. I kinda want this flag to be more known, as I think it's kinda cool and a lot of the attention goes to the 8-stripe flag it flew alongside.

Screenshots (if appropriate)

Checklist

[x] Text content in this PR was created by a human and not AI.
[x] I have read the contribution guidelines and code of conduct.

s-thom / ourflags.lgbt