iOS service extensions

[davidbritch]

Add content on how to add an iOS service extension to a MAUI project. This is supported, but there's no project template for it. Instead, it'll require re-using the project file created by the Xamarin.iOS template and porting it to MAUI.

dotnet/maui#8299

https://learn.microsoft.com/en-us/xamarin/ios/platform/extensions
https://learn.microsoft.com/en-us/xamarin/ios/platform/extensions-with-xamarinforms

---

Associated WorkItem - 82661

[mattleibow]

This seems to be very nice too: dotnet/maui#3289

[davidbritch]

While it's possible to get this working, iOS extensions have so many rough edges in .NET 6/7 that I'll hold off doc'ing this until some work's been performed in this area.

Because this has been imported into QUEST, I'm going to close this issue and create a new one.

Replaced by #1434

[ssbssb-cmd]

hi did anyone get this working? I need to create a Notification Service extension for iOS in a single project MAUI app

[skuzminov-softheme]

@ssbssb-cmd try this example https://github.com/exponea/bloomreach-maui-sdk/tree/master/ExamplePushServiceExtension

Worked for me almost from the first try.