Add unit tests for SBOM ingestion and transformation

- Implement `SbomIngestServiceCollectionExtensionsTests` to verify the SBOM ingestion pipeline exports snapshots correctly.
- Create `SbomIngestTransformerTests` to ensure the transformation produces expected nodes and edges, including deduplication of license nodes and normalization of timestamps.
- Add `SbomSnapshotExporterTests` to test the export functionality for manifest, adjacency, nodes, and edges.
- Introduce `VexOverlayTransformerTests` to validate the transformation of VEX nodes and edges.
- Set up project file for the test project with necessary dependencies and configurations.
- Include JSON fixture files for testing purposes.

src/Scheduler/__Tests/StellaOps.Scheduler.WebService.Tests/SchedulerWebApplicationFactory.cs

@@ -1,9 +1,11 @@
+using System;
 using System.Collections.Generic;
 using Microsoft.AspNetCore.Hosting;
 using Microsoft.AspNetCore.Mvc.Testing;
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
 using StellaOps.Scheduler.WebService.Options;
+using StellaOps.Scheduler.WebService.Runs;
 
 namespace StellaOps.Scheduler.WebService.Tests;
 
@@ -41,6 +43,13 @@ public sealed class SchedulerWebApplicationFactory : WebApplicationFactory<Progr
                 options.Webhooks.Excitor.HmacSecret = "excitor-secret";
                 options.Webhooks.Excitor.Enabled = true;
             });
+
+            services.PostConfigure<RunStreamOptions>(options =>
+            {
+                options.PollInterval = TimeSpan.FromMilliseconds(100);
+                options.QueueLagInterval = TimeSpan.FromMilliseconds(200);
+                options.HeartbeatInterval = TimeSpan.FromMilliseconds(150);
+            });
         });
     }
 }