Added basic authentication and localization

src/Server/Models/Auth.cs

@@ -0,0 +1,13 @@
+namespace Server.Models;
+
+public class SimpleAuthOptions
+{
+    public List<SimpleUser> Users { get; set; } = new();
+}
+
+public class SimpleUser
+{
+    public string Username { get; set; } = "";
+    public string Password { get; set; } = "";
+    public string[] Roles { get; set; } = Array.Empty<string>();
+}