offload_daemon: Introduce a reference implementation

Adding a new dedicated binary that is meant to be used as a reference
implementation for validating that offloaded snapshot/restore works and
meant to be used through tests in general.

Signed-off-by: Sebastien Boeuf <sboeuf@meta.com>
Assisted-by: Claude:claude-opus-4-7

Cargo.toml

@@ -23,6 +23,7 @@ members = [
   "event_monitor",
   "hypervisor",
   "net_util",
+  "offload_daemon",
   "option_parser",
   "pci",
   "performance-metrics",