Add ViewImageConfig for iPad mini (6th generation)

[ZevEisenberg]

The iPad mini (6th generation) has a wide 3:2 aspect ratio, plus large top and bottom safe area insets, which makes it useful to snapshot test for extreme iPad layout issues.

SwiftUI code used to inspect sizes

import SwiftUI

struct ContentView: View {

    @Environment(\.horizontalSizeClass) var horizontalSizeClass
    @Environment(\.verticalSizeClass) var verticalSizeClass

    var body: some View {
        ZStack(alignment: .top) {
            GeometryReader { proxy in
                Text("Size: \(proxy.size.width, format: .number) x \(proxy.size.height, format: .number)")
                    .frame(maxWidth: .infinity, maxHeight: .infinity)
                    .offset(y: -20)
            }
            .ignoresSafeArea()

            GeometryReader { proxy in
                let insets = proxy.safeAreaInsets
                Text("Safe:\n(top: \(insets.top, format: .number), lead: \(insets.leading, format: .number), bot: \(insets.bottom, format: .number), trail: \(insets.trailing, format: .number))")
                    .frame(maxWidth: .infinity, maxHeight: .infinity)
                    .offset(y: 20)
            }

            VStack {
                Text("Horizontal: \(horizontalSizeClass == .compact ? "compact" : "regular")")
                Text("Vertical: \(verticalSizeClass == .compact ? "compact" : "regular")")
            }
        }
    }
}

Images captured from iPad mini 6th gen (iOS 15.5 simulator) while researching sizes for this

Size	Landscape	Portrait
Full
1/2		-
1/3
2/3

Snapshots in this PR were recorded on the same simulator/OS combination specified in the Makefile: iPhone 11 Pro, iOS 13.3. I had to tweak the Makefile on my local machine because it specified a scheme that didn't exist, and I suspect it's not up to date for running the latest tests. Let me know if I need to tweak or re-record anything.

[ZevEisenberg]

Bump: this has been rebased on the latest main. The project is still configured to build on iPhone 11 Pro, iOS 13.3, but iOS 13 does not appear to be available as a simulator in Xcode 15, so I captured these snapshots on an iPhone 11 Pro, iOS 15.5 simulator. Presumably, you’ll want to update all the snapshots to a more modern device and then I can rebase these changes.

Are you interested in merging this? I just rediscovered it because we realized we had a bug in our app that we didn’t catch because our snapshots don’t cover this iPad size. We added the iPad manually for this test, but it would be nice if it were built in.