feat: Add Go module and workspace test fixtures

- Created expected JSON files for Go modules and workspaces.
- Added go.mod and go.sum files for example projects.
- Implemented private module structure with expected JSON output.
- Introduced vendored dependencies with corresponding expected JSON.
- Developed PostgresGraphJobStore for managing graph jobs.
- Established SQL migration scripts for graph jobs schema.
- Implemented GraphJobRepository for CRUD operations on graph jobs.
- Created IGraphJobRepository interface for repository abstraction.
- Added unit tests for GraphJobRepository to ensure functionality.

src/Cli/StellaOps.Cli/Program.cs

@@ -141,6 +141,7 @@ internal static class Program
 
         services.AddSingleton<IScannerExecutor, ScannerExecutor>();
         services.AddSingleton<IScannerInstaller, ScannerInstaller>();
+        services.AddSingleton<MigrationCommandService>();
 
         // CLI-FORENSICS-53-001: Forensic snapshot client
         services.AddHttpClient<IForensicSnapshotClient, ForensicSnapshotClient>(client =>