break widget related stuff into its own project as the main HB project was just becoming too bloated

Hyperbar.Widget/WidgetService.cs

@@ -0,0 +1,17 @@
+using Microsoft.Extensions.Hosting;
+
+namespace Hyperbar.Widget;
+
+public sealed class WidgetService(IEnumerable<IInitializer> initializers) :
+    IHostedService
+{
+    public async Task StartAsync(CancellationToken cancellationToken)
+    {
+        foreach (IInitializer initializer in initializers)
+        {
+            await initializer.InitializeAsync();
+        }
+    }
+
+    public Task StopAsync(CancellationToken cancellationToken) => Task.CompletedTask;
+}