Animated emoji cycling through LGBTQ+ flags

[Akarys42]

In the past we had a lot of flag emojis, although it can be a bit out of scope for our community to add more and more flags. My proposal would be to create an animated emoji cycling through all the different flags, in a similar fashion as our June server icon.

[lemonsaurus]

I quite like this proposal, and would welcome a PR for this.