Adding Telemetry Events for svg and markdown enable/disable (#2814)

* Raising Telemetry events when svg and markdown preview pane is turned off

* Properly serializing Bool property.  This allows us to be backwards compatible with .17 settings but interact with the properties as boolean elements, and fire events on property changed notification

src/core/Microsoft.PowerToys.Settings.UI.Lib/BoolPropertyJsonConverter.cs

@@ -0,0 +1,23 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Text.Json;
+using System.Text.Json.Serialization;
+
+namespace Microsoft.PowerToys.Settings.UI.Lib
+{
+    public class BoolPropertyJsonConverter : JsonConverter<bool>
+    {
+        public override bool Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
+        {
+            var boolProperty = JsonSerializer.Deserialize<BoolProperty>(ref reader, options);
+            return boolProperty.Value;
+        }
+
+        public override void Write(Utf8JsonWriter writer, bool value, JsonSerializerOptions options)
+        {
+            var boolProperty = new BoolProperty(value);
+            JsonSerializer.Serialize(writer, boolProperty, options);
+        }
+    }
+}