Fix bug CameraView on iOS: camera preview is not always rotated correct and photos are rotated

[Forestbrook]

Description of Change

The Camera preview was not always correct because UIDevice.CurrentDevice.Orientation does not always return the correct rotation.

The photos were shown rotated, because the VideoOrientation of the AVCapturePhotoOutput connection was not set when taking a picture.

Linked Issues

#2311 [BUG] CameraView on iOS: camera preview is not always rotated correct and photos are rotated

Fixes:

• Observe OrientationDidChange notification from UIDevice to make sure the camera preview is always rotated correctly
• Set VideoOrientation of the AVCapturePhotoOutput connection before taking the picture to make sure the photo will not be rotated.
• Optimized retrieving the image data after taking the picture.
• On iOS 13+ used UIWindowScene from UIApplication.SharedApplication.ConnectedScenes to retrieve the correct video orientation.

Could not add tests because CameraManager.macios.cs is internal and the changes are iOS specific.

PR Checklist

• Has a linked Issue, and the Issue has been approved(bug) or Championed (feature/proposal)
• Has tests (if omitted, state reason in description)
• Has samples (if omitted, state reason in description)
• Rebased on top of main at time of PR
• Changes adhere to coding standard
• Documentation created or updated: https://github.com/MicrosoftDocs/CommunityToolkit/pulls

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[Forestbrook]

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[bijington]

@Forestbrook Thank you for this. I have added some comments that hopefully you can address but I think the general changes look good

[bijington]

I haven't tested this myself but the overall changes look good

[tschbc]

@Forestbrook @bijington Just as an FYI, we tested this PR in our iOS project and orientation is now working well.

Very excited for this to be merged in.

[bijington]

@tschbc thanks for confirming. I hadn't managed to test this so knowing someone else has really helps. I don't think this will merge before .NET 9.0 support as we are trying to get that in right now. But it'll go in shortly after

[bijington]

Thanks again for this!

[klindberg-magaya]

@bijington Hey Shawn I have been following this PR and it's of interest to our needs as well. It seems that you approved it, but maybe only SDKs were out of date. What's the process (maybe a time/date?) to getting released.
#2312

NOTE I am currently getting build errors on the main branch as well as that pr branch.
error CS0246: The type or namespace name 'MauiUIApplicationDelegate' could not be found +

[bijington]

@klindberg-magaya we are still trying to get the .NET 9.0 PR merged and then get all of these other bits in.

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