Created the Sample app widget target in the Xcode project.

Widgets/Attendi/Sources/Bundle/AttendiWidgetBundle.swift

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+import WidgetKit
+import SwiftUI
+
+@main
+struct AttendiWidgetBundle: WidgetBundle {
+    var body: some Widget {
+        AttendiWidget()
+    }
+}

Widgets/Attendi/Sources/Intents/AppIntent.swift

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+import WidgetKit
+import AppIntents
+
+struct ConfigurationAppIntent: WidgetConfigurationIntent {
+    static var title: LocalizedStringResource { "Configuration" }
+    static var description: IntentDescription { "This is an example widget." }
+
+    // An example configurable parameter.
+    @Parameter(title: "Favorite Emoji", default: "😃")
+    var favoriteEmoji: String
+}