feat: Implement IsolatedReplayContext for deterministic audit replay

- Added IsolatedReplayContext class to provide an isolated environment for replaying audit bundles without external calls.
- Introduced methods for initializing the context, verifying input digests, and extracting inputs for policy evaluation.
- Created supporting interfaces and options for context configuration.

feat: Create ReplayExecutor for executing policy re-evaluation and verdict comparison

- Developed ReplayExecutor class to handle the execution of replay processes, including input verification and verdict comparison.
- Implemented detailed drift detection and error handling during replay execution.
- Added interfaces for policy evaluation and replay execution options.

feat: Add ScanSnapshotFetcher for fetching scan data and snapshots

- Introduced ScanSnapshotFetcher class to retrieve necessary scan data and snapshots for audit bundle creation.
- Implemented methods to fetch scan metadata, advisory feeds, policy snapshots, and VEX statements.
- Created supporting interfaces for scan data, feed snapshots, and policy snapshots.

src/Cli/StellaOps.Cli/Commands/Binary/BinaryCommandGroup.cs

@@ -220,13 +220,13 @@ internal static class BinaryCommandGroup
         var graphOption = new Option<string>("--graph", new[] { "-g" })
         {
             Description = "Path to graph file.",
-            IsRequired = true
+            Required = true
         };
 
         var dsseOption = new Option<string>("--dsse", new[] { "-d" })
         {
             Description = "Path to DSSE envelope.",
-            IsRequired = true
+            Required = true
         };
 
         var publicKeyOption = new Option<string?>("--public-key", new[] { "-k" })