UIKit sheet presentation from SwiftUI context

[etoledom]

Closes BETS-50

Description

This PR is aimed to replace the native SwiftUI sheet presentation with the UIKit sheet presentation.

Wins from this changes are:

• Native transition animation on SwiftUI context when the sheet height changes.
• Native detection of dismissal attempt by the user.
• Half and full detents support for pre-iOS16

To Achieve this the follow changes were made:

QuickEditorViewController is now used by both UIKit and SwiftUI contexts. It wraps QuickEditor view in a UIHostingController to be presented by UIKit framework.

From UIKit context:

Not many changes. It uses the public QuickEditorPresenter to present QuickEditorViewController in a bottom sheet.

A change was made where the CustomImageEditorControllerRepresentable conversion is handled by QuickEditorPresenter directly, in order to remove UIKit dependencies from the QuickEditorViewController init parameters.

From SwiftUI context:

There's a new QuickEditorBottomSheetPresenterViewController which will present modally (on a sheet) theQuickEditorViewController. This part is the trick to do the presentation work.

Then QuickEditorBottomSheetPresenterViewControllerRepresentable wraps it in a Representable, to be able to be inserted into the SwiftUI hierarchy.

Then, QuickEditorBottomSheetPresenterViewControllerRepresentable is initialised with the properties given by the public View.gravatarQuickEditorSheet extension, and passed to a new view modifier QuickEditorBottomSheetViewControllerPresentationModifier.

The new QuickEditorBottomSheetViewControllerPresentationModifier modifier will conditionally add or remove the presenter controller to the hierarchy according to isPresented property. And it will ensure that its dimensions are zero to keep it hidden. Every time the controller is added to the hierarchy, it will automatically present the QuickEditorController in a sheet presentation.

Testing Steps

From SwiftUI context:

• Native transition animation on SwiftUI context when the sheet height changes.
• Native detection of dismissal attempt by the user.
• Custom image editor injection.
• System color scheme, and user specified color scheme.
• Update callbacks to parent app.
• All different presentation styles.

From UIKit context:

Keen eye to:

• Custom image editor injection.
• System color scheme, and user specified color scheme.

As the rest has been mostly kept as it was before, but still good to smoke test everything else.

[wpmobilebot]

📲 You can test the changes from this Pull Request in Gravatar Prototype Build by scanning the QR code below to install the corresponding build.

	App Name	Gravatar Prototype Build
	Build Number	2387
	Version	PR #763
	Bundle ID	com.automattic.gravatar-sdk-demo-uikit.prototype-build
	Commit	12ce401
	Installation URL	1qmh5rjrgkc4o

Automatticians: You can use our internal self-serve MC tool to give yourself access to those builds if needed.

[pinarol]

So this is the trick! 🪄

[pinarol]

Masterpiece 🎉