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.

out/release/release.yaml

@@ -0,0 +1,18 @@
+version: "2025.11.03-test"
+channel: airgap
+releaseDate: "2025-11-03"
+gitSha: 0000000000000000000000000000000000000000
+components:
+  []
+charts:
+  []
+compose:
+  []
+debugStore:
+  manifest: "debug/debug-manifest.json"
+  sha256: d924d25e7b028105a1c7d16cb1d82955edf103a48571a253b474d8ee30a1b577
+  size: 340
+  generatedAt: "2025-11-03T21:56:23Z"
+  artifactCount: 1
+checksums:
+  sha256: 72473433eb9cee20e848dd52212d10a2295158359d47c35b823d28de09858f59