Created the Avalonia MVVM template, split the CLI into Avalonia.UI and Avalonia.Core

AutumnLauncher.Core/Configuration.cs

@@ -0,0 +1,25 @@
+using System.Runtime.InteropServices;
+
+namespace AutumnLauncher;
+
+public static class Configuration
+{
+    public static string DataDir { get; set; } = Path.Combine(Environment.GetFolderPath(
+        Environment.SpecialFolder.LocalApplicationData,
+        Environment.SpecialFolderOption.Create), "AutumnLauncher");
+
+    public static string ConfigDir { get; set; } = Path.Combine(Environment.GetFolderPath(
+        Environment.SpecialFolder.ApplicationData,
+        Environment.SpecialFolderOption.Create), "AutumnLauncher");
+    
+    public static LauncherPlatform Platform { get; set; } = GetPlatform();
+
+    private static LauncherPlatform GetPlatform()
+    {
+        if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows)) return LauncherPlatform.Windows;
+
+        if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux)) return LauncherPlatform.Linux;
+
+        return LauncherPlatform.Unsupported;
+    }
+}