Rewrite how picking a matching audio session works

rewrite the UI layer to make it only send updates to the stream deck if needed

src/FocusVolumeControl/UI/ValueWithOpacity.cs

@@ -0,0 +1,20 @@
+using Newtonsoft.Json;
+using System;
+using System.Collections.Generic;
+using System.Data.SqlTypes;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace FocusVolumeControl.UI
+{
+	internal class ValueWithOpacity<T>
+	{
+		[JsonProperty("value")]
+		public required T Value { get; init; }
+
+		[JsonProperty("opacity")]
+		public required float Opacity { get; init; }
+
+	}
+}