[openstreetmap/openstreetmap-website] Support Sign in with Apple (#2799)

[hikemaniac]

The OpenStreetMap website currently allows signing in with several third party providers including Google, Microsoft, Wikipedia, GitHub, Yahoo, etc... Apple recently launched "[Sign in with Apple](https://developer.apple.com/documentation/sign_in_with_apple)" as their login framework, so it might be worth some consideration to add it as well, especially since it's seemingly gaining popularity quickly - I've already seen it adopted by many different services.

Docs:
- [Sign in with Apple JS](https://developer.apple.com/documentation/sign_in_with_apple/sign_in_with_apple_js)
- [Sign in with Apple REST API](https://developer.apple.com/documentation/sign_in_with_apple/sign_in_with_apple_rest_api)

As it's apparently necessary to be enrolled in the Apple Developer Program to use the software :confused:, I'm not even sure if we can use their framework. I just wanted to put this forward as a heads-up so feel free to dismiss this if it's not worth the implementation effort or we can't comply with their conditions.

-- 
You are receiving this because you are subscribed to this thread.
Reply to this email directly or view it on GitHub:
https://github.com/openstreetmap/openstreetmap-website/issues/2799
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstreetmap.org/pipermail/rails-dev/attachments/20200828/73e2b597/attachment.htm>