Add game header (#5)

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

src/GameIdeas/Client/GameIdeas.BlazorApp/Shared/Components/SliderRange/SliderRangeParams.cs

@@ -0,0 +1,10 @@
+namespace GameIdeas.BlazorApp.Shared.Components.SliderRange;
+
+public class SliderRangeParams
+{
+    public int Min{ get; set; }
+    public int Max { get; set; }
+    public int ValueMin { get; set; }
+    public int ValueMax { get; set; }
+    public int Gap { get; set; } = 0;
+}