move backend to subfolder

tanks-backend/TanksServer/Models/Player.cs

@@ -0,0 +1,16 @@
+using System.Text.Json.Serialization;
+
+namespace TanksServer.Models;
+
+internal sealed class Player(string name, Guid id)
+{
+    public string Name => name;
+
+    [JsonIgnore] public Guid Id => id;
+
+    [JsonIgnore] public PlayerControls Controls { get; } = new();
+
+    public Scores Scores { get; } = new();
+
+    public DateTime LastInput { get; set; } = DateTime.Now;
+}