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/UIState.cs

@@ -0,0 +1,65 @@
+using Newtonsoft.Json.Linq;
+using System;
+using System.Collections.Generic;
+using System.Drawing;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using BarRaider.SdTools;
+using Newtonsoft.Json;
+
+namespace FocusVolumeControl.UI
+{
+	internal class UIState
+	{
+		[JsonProperty("title")]
+		public string Title { get; private init; }
+
+		[JsonProperty("value")]
+		public ValueWithOpacity<string> Value { get; private init; }
+
+		[JsonProperty("indicator")]
+		public ValueWithOpacity<float>Indicator { get; private init; }
+
+		[JsonProperty("icon")]
+		public ValueWithOpacity<string> icon { get; private init; }
+
+		public static UIState Build(ActiveAudioSessionWrapper session)
+		{
+			var volume = session.GetVolumeLevel();
+
+			var opacity = session.GetMuted() != true ? 1 : 0.5f;
+
+			var iconData = "";
+
+			if (session.Icon != null)
+			{
+				iconData = session.Icon;
+			}
+			else
+			{
+				try
+				{
+					var icon = Icon.ExtractAssociatedIcon(session.ExecutablePath);
+					iconData = Tools.ImageToBase64(icon.ToBitmap(), true);
+				}
+				catch
+				{
+					iconData = "Image/pluginIcon.png";
+				}
+				session.Icon = iconData;
+			}
+
+
+			return new UIState()
+			{
+				Title = session.DisplayName,
+				Value = new() { Value = $"{volume}%", Opacity = opacity },
+				Indicator = new() { Value = volume, Opacity = opacity },
+				icon = new() { Value = iconData, Opacity = opacity },
+			};
+		}
+
+	}
+}

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; }
+
+	}
+}