Locations manifest, reorganized instances settings

Model/SettingsModel.swift

@@ -0,0 +1,18 @@
+import Foundation
+import SwiftUI
+
+class SettingsModel: ObservableObject {
+    @Published var presentingAlert = false
+    @Published var alert = Alert(title: Text("Error"))
+
+    func presentAlert(title: String, message: String? = nil) {
+        let message = message.isNil ? nil : Text(message!)
+        alert = Alert(title: Text(title), message: message)
+        presentingAlert = true
+    }
+
+    func presentAlert(_ alert: Alert) {
+        self.alert = alert
+        presentingAlert = true
+    }
+}