forgot to add registry.cs

RobloxLegacy/Utilities/Registry.cs

@@ -0,0 +1,23 @@
+using Microsoft.Win32;
+
+namespace RobloxLegacy.Utilities;
+
+public class Registry
+{
+    private static RegistryKey? OpenKey(bool writable = true)
+    {
+        return Microsoft.Win32.Registry.CurrentUser.CreateSubKey(@"Software\RobloxLegacy", writable);
+    }
+
+    public static void SaveVersion(string appName, string version)
+    {
+        using var key = OpenKey();
+        key?.SetValue($"{appName}Version", version, RegistryValueKind.String);
+    }
+    
+    public static string? GetVersion(string appName)
+    {
+        using var key = OpenKey(false);
+        return key?.GetValue($"{appName}Version") as string;
+    }
+}