[FA-misc] Add IJobStatusUpdate event contract and publishing helper

FictionArchive.Service.Shared/Extensions/JobStatusPublisher.cs

@@ -0,0 +1,20 @@
+using FictionArchive.Common.Enums;
+using FictionArchive.Service.Shared.Contracts.Events;
+using MassTransit;
+
+namespace FictionArchive.Service.Shared.Extensions;
+
+public static class JobStatusPublisher
+{
+    public static Task ReportJobStatus(
+        this IPublishEndpoint endpoint,
+        Guid jobId,
+        string jobType,
+        string displayName,
+        JobStatus status,
+        Guid? parentJobId = null,
+        string? errorMessage = null,
+        Dictionary<string, string>? metadata = null)
+        => endpoint.Publish<IJobStatusUpdate>(new JobStatusUpdate(
+            jobId, parentJobId, jobType, displayName, status, errorMessage, metadata));
+}