Add persistence of selected currencies to disk via SQLite

Sources/SatsPrice/SatsPriceApp.swift

@@ -11,6 +11,9 @@ let logger: Logger = Logger(subsystem: "xyz.tyiu.SatsPrice", category: "SatsPric
 /// The Android SDK number we are running against, or `nil` if not running on Android
 let androidSDK = ProcessInfo.processInfo.environment["android.os.Build.VERSION.SDK_INT"].flatMap({ Int($0) })
 
+/// The shared data model.
+private let model = try! SatsPriceModel(url: URL.documentsDirectory.appendingPathComponent("satsprice.sqlite"))
+
 /// The shared top-level view for the app, loaded from the platform-specific App delegates below.
 ///
 /// The default implementation merely loads the `ContentView` for the app and logs a message.
@@ -19,7 +22,7 @@ public struct RootView : View {
     }
 
     public var body: some View {
-        ContentView()
+        ContentView(model: model)
             .task {
                 logger.log("Welcome to Skip on \(androidSDK != nil ? "Android" : "Darwin")!")
                 logger.warning("Skip app logs are viewable in the Xcode console for iOS; Android logs can be viewed in Studio or using adb logcat")