Bring back airhorn!

For those who don't remember it, as it was about four years ago, Discord had a bot called Airhorn! Whilst minor, it was demonstrating the power of the Discord API when it was released. At the time it was the only bot ever managed by Discord – and maybe it still would have been if it was still hosted.

For those looking to self host, the source code is available here: https://github.com/discord/airhornbot and the website was https://airhorn.solutions but it is unfortunately no longer alive.

Airhorn Bot was a true staple of Discord and I have many fun memories trolling friends in voice chats with it, or as a grand entrance as I was joining a call 😂

Would be great to see Airhorn running again, it was one of the reasons I used Discord so much back then!