Add initial project structure with basic view models, views, and resources

CryptoPortfolio Tracker/ViewModels/SettingsViewModel.cs

@@ -0,0 +1,8 @@
+using CommunityToolkit.Mvvm.ComponentModel;
+
+namespace CryptoPortfolio_Tracker.ViewModels;
+
+public partial class SettingsViewModel : ViewModelBase
+{
+    [ObservableProperty] public partial string Greeting { get; set; } = "This is Settings";
+}