Upgrade to .NET 10 and finalize foundation scaffold

Domain/Suggestion.cs

@@ -0,0 +1,32 @@
+using System.ComponentModel.DataAnnotations;
+
+namespace GameList.Domain;
+
+public class Suggestion
+{
+    public int Id { get; set; }
+
+    [Required]
+    public Guid PlayerId { get; set; }
+    public Player? Player { get; set; }
+
+    [Required]
+    [MaxLength(100)]
+    public string Name { get; set; } = string.Empty;
+
+    [MaxLength(50)]
+    public string? Genre { get; set; }
+
+    [MaxLength(500)]
+    public string? Description { get; set; }
+
+    [MaxLength(2048)]
+    public string? ScreenshotUrl { get; set; }
+
+    [MaxLength(2048)]
+    public string? YoutubeUrl { get; set; }
+
+    public DateTimeOffset CreatedAt { get; set; } = DateTimeOffset.UtcNow;
+
+    public ICollection<Vote> Votes { get; set; } = new List<Vote>();
+}