chore: add SwiftUI example app

Author: russellwheatley

samples/swiftui/FirebaseSwiftUIExample/FirebaseSwiftUIExample.xcodeproj/project.pbxproj

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+{
+  "colors" : [
+    {
+      "idiom" : "universal"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

samples/swiftui/FirebaseSwiftUIExample/FirebaseSwiftUIExample/Assets.xcassets/AccentColor.colorset/Contents.json

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+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "platform" : "ios",
+      "size" : "1024x1024"
+    },
+    {
+      "appearances" : [
+        {
+          "appearance" : "luminosity",
+          "value" : "dark"
+        }
+      ],
+      "idiom" : "universal",
+      "platform" : "ios",
+      "size" : "1024x1024"
+    },
+    {
+      "appearances" : [
+        {
+          "appearance" : "luminosity",
+          "value" : "tinted"
+        }
+      ],
+      "idiom" : "universal",
+      "platform" : "ios",
+      "size" : "1024x1024"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

samples/swiftui/FirebaseSwiftUIExample/FirebaseSwiftUIExample/Assets.xcassets/AppIcon.appiconset/Contents.json

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+{
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

samples/swiftui/FirebaseSwiftUIExample/FirebaseSwiftUIExample/Assets.xcassets/Contents.json

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+//
+//  ContentView.swift
+//  FirebaseSwiftUIExample
+//
+//  Created by Russell Wheatley on 18/02/2025.
+//
+
+import SwiftUI
+import SwiftData
+
+struct ContentView: View {
+    @Environment(\.modelContext) private var modelContext
+    @Query private var items: [Item]
+
+    var body: some View {
+        NavigationSplitView {
+            List {
+                ForEach(items) { item in
+                    NavigationLink {
+                        Text("Item at \(item.timestamp, format: Date.FormatStyle(date: .numeric, time: .standard))")
+                    } label: {
+                        Text(item.timestamp, format: Date.FormatStyle(date: .numeric, time: .standard))
+                    }
+                }
+                .onDelete(perform: deleteItems)
+            }
+            .toolbar {
+                ToolbarItem(placement: .navigationBarTrailing) {
+                    EditButton()
+                }
+                ToolbarItem {
+                    Button(action: addItem) {
+                        Label("Add Item", systemImage: "plus")
+                    }
+                }
+            }
+        } detail: {
+            Text("Select an item")
+        }
+    }
+
+    private func addItem() {
+        withAnimation {
+            let newItem = Item(timestamp: Date())
+            modelContext.insert(newItem)
+        }
+    }
+
+    private func deleteItems(offsets: IndexSet) {
+        withAnimation {
+            for index in offsets {
+                modelContext.delete(items[index])
+            }
+        }
+    }
+}
+
+#Preview {
+    ContentView()
+        .modelContainer(for: Item.self, inMemory: true)
+}

samples/swiftui/FirebaseSwiftUIExample/FirebaseSwiftUIExample/ContentView.swift

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+//
+//  FirebaseSwiftUIExampleApp.swift
+//  FirebaseSwiftUIExample
+//
+//  Created by Russell Wheatley on 18/02/2025.
+//
+
+import SwiftUI
+import SwiftData
+
+@main
+struct FirebaseSwiftUIExampleApp: App {
+    var sharedModelContainer: ModelContainer = {
+        let schema = Schema([
+            Item.self,
+        ])
+        let modelConfiguration = ModelConfiguration(schema: schema, isStoredInMemoryOnly: false)
+
+        do {
+            return try ModelContainer(for: schema, configurations: [modelConfiguration])
+        } catch {
+            fatalError("Could not create ModelContainer: \(error)")
+        }
+    }()
+
+    var body: some Scene {
+        WindowGroup {
+            ContentView()
+        }
+        .modelContainer(sharedModelContainer)
+    }
+}

samples/swiftui/FirebaseSwiftUIExample/FirebaseSwiftUIExample/FirebaseSwiftUIExampleApp.swift

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+//
+//  Item.swift
+//  FirebaseSwiftUIExample
+//
+//  Created by Russell Wheatley on 18/02/2025.
+//
+
+import Foundation
+import SwiftData
+
+@Model
+final class Item {
+    var timestamp: Date
+    
+    init(timestamp: Date) {
+        self.timestamp = timestamp
+    }
+}

samples/swiftui/FirebaseSwiftUIExample/FirebaseSwiftUIExample/Item.swift

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+{
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

samples/swiftui/FirebaseSwiftUIExample/FirebaseSwiftUIExample/Preview Content/Preview Assets.xcassets/Contents.json

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+//
+//  FirebaseSwiftUIExampleTests.swift
+//  FirebaseSwiftUIExampleTests
+//
+//  Created by Russell Wheatley on 18/02/2025.
+//
+
+import Testing
+@testable import FirebaseSwiftUIExample
+
+struct FirebaseSwiftUIExampleTests {
+
+    @Test func example() async throws {
+        // Write your test here and use APIs like `#expect(...)` to check expected conditions.
+    }
+
+}

samples/swiftui/FirebaseSwiftUIExample/FirebaseSwiftUIExampleTests/FirebaseSwiftUIExampleTests.swift

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+//
+//  FirebaseSwiftUIExampleUITests.swift
+//  FirebaseSwiftUIExampleUITests
+//
+//  Created by Russell Wheatley on 18/02/2025.
+//
+
+import XCTest
+
+final class FirebaseSwiftUIExampleUITests: XCTestCase {
+
+    override func setUpWithError() throws {
+        // Put setup code here. This method is called before the invocation of each test method in the class.
+
+        // In UI tests it is usually best to stop immediately when a failure occurs.
+        continueAfterFailure = false
+
+        // In UI tests it’s important to set the initial state - such as interface orientation - required for your tests before they run. The setUp method is a good place to do this.
+    }
+
+    override func tearDownWithError() throws {
+        // Put teardown code here. This method is called after the invocation of each test method in the class.
+    }
+
+    @MainActor
+    func testExample() throws {
+        // UI tests must launch the application that they test.
+        let app = XCUIApplication()
+        app.launch()
+
+        // Use XCTAssert and related functions to verify your tests produce the correct results.
+    }
+
+    @MainActor
+    func testLaunchPerformance() throws {
+        if #available(macOS 10.15, iOS 13.0, tvOS 13.0, watchOS 7.0, *) {
+            // This measures how long it takes to launch your application.
+            measure(metrics: [XCTApplicationLaunchMetric()]) {
+                XCUIApplication().launch()
+            }
+        }
+    }
+}