Add game header (#5)

Co-authored-by: Maxime Adler <madler@sqli.com>
Reviewed-on: #5

src/GameIdeas/GameIdeas.Shared/Dto/GameDto.cs

@@ -0,0 +1,7 @@
+namespace GameIdeas.Shared.Dto;
+
+public class GameDto
+{
+    public string? Name { get; set; }
+    public string? ReleaseDate { get; set; }
+}