OPC # 0001: Extract OPC into standalone repo

ControlPlane.Api/Consumers/ProvisioningProgressConsumer.cs

@@ -0,0 +1,14 @@
+using ControlPlane.Api.Services;
+using ControlPlane.Core.Messages;
+using MassTransit;
+
+namespace ControlPlane.Api.Consumers;
+
+public sealed class ProvisioningProgressConsumer(SseEventBus bus) : IConsumer<ProvisioningProgressEvent>
+{
+    public Task Consume(ConsumeContext<ProvisioningProgressEvent> context)
+    {
+        bus.Publish(context.Message);
+        return Task.CompletedTask;
+    }
+}