ASWebAuthenticationSession Support

[sampaxk]

Switched the authentication method from SafariURLHandler to ASWebAuthenticationURLHandler.
Implemented ASWebAuthenticationPresentationContextProviding in the OAuth2ClientPlugin class.

[narcis-ro]

Should this be?

callbackUrlScheme: URL(string: redirectUrl)!.scheme!,

So it works with any host url? e.g ://auth

[sampaxk]

Yes, it should be as you've written. I've not tested it with other host urls but it should with any url.

[NoobleMcScrunchkin]

This PR looks like its gone a little bit quiet. I would love to see this one brought up to date and completed.

[lazerwalker]

Another +1, I'd love to see this get merged in sooner rather than later. Happy to help get it up-to-date with latest main and/or help with feedback if there's any indication the maintainers would merge.

[HarelM]

Any update on this one?
I'm looking into migrating from cordova-plugin-oauth to something more capacitor native.
The things that I noticed that are different are:

1. This PR (ASWebAuthenticationSession).
2. CustomTabs for Android.

The code can be found here:
https://github.com/AyogoHealth/cordova-plugin-oauth/blob/main/src/ios/OAuthPlugin.swift
https://github.com/AyogoHealth/cordova-plugin-oauth/blob/main/src/android/OAuthPlugin.java

There's not much there, but I think it's more secure and modern.
The other plugin causing compilation warnings due to support for very old iOS versions, which is not what I want for my app, see here: AyogoHealth/cordova-plugin-oauth#48.

I'll be happy to open a PR if this will help push things forwards.
@lazerwalker @NoobleMcScrunchkin @sampaxk what did you end up doing? Are you using a different plugin?

[lazerwalker]

My usecase doesn't have a strict requirement to use ASWebAuthenticationSession, it's just a nice-to-have, so I'm currently still using this library as-is.