feat: add event for when OpenRGB started changes

Author: andrewbabbittdev

src/ChromaControl.SDK.OpenRGB/IOpenRGBService.cs

@@ -19,6 +19,11 @@ public interface IOpenRGBService
     /// </summary>
     bool Started { get; }
 
+    /// <summary>
+    /// Occurs when <see cref="Started"/> changes.
+    /// </summary>
+    event EventHandler<bool>? StartedChanged;
+
     /// <summary>
     /// The devices available in OpenRGB.
     /// </summary>

src/ChromaControl.SDK.OpenRGB/OpenRGBService.cs

@@ -21,6 +21,9 @@ public class OpenRGBService : IOpenRGBService, IAsyncDisposable
     /// <inheritdoc/>
     public bool Started { get; internal set; }
 
+    /// <inheritdoc/>
+    public event EventHandler<bool>? StartedChanged;
+
     /// <inheritdoc/>
     public ImmutableList<OpenRGBDevice> Devices => [.. _devices];
 
@@ -51,6 +54,7 @@ public async Task Restart(CancellationToken cancellationToken = default)
         if (Started)
         {
             Started = false;
+            StartedChanged?.Invoke(this, Started);
 
             _service.DeviceListUpdated -= OnDeviceListUpdated;
             await _service.DisposeAsync();
@@ -242,5 +246,6 @@ private async void OnDeviceListUpdated(object? sender, EventArgs e)
         await UpdateDeviceListAsync();
 
         Started = true;
+        StartedChanged?.Invoke(this, Started);
     }
 }