A url that when accessed adds an event to your proton calendar. This would be useful for several reasons:
1) I use these urls + chatgpt to extract event info and add it to my calendar. I've done this with google in the past with great success, but now I use proton calendar and can't do this anymore.
2) Sharing events (such as on websites) that lets people with proton calendar add quickly
3) increasing awareness of proton calendar through viewing of these links