vmm: init migration worker module

This initializes the module and the thread that will handle (control)
the migration. This introduces the new types without the necessary
wiring.

On-behalf-of: SAP philipp.schuster@sap.com
Signed-off-by: Philipp Schuster <philipp.schuster@cyberus-technology.de>

vmm/src/lib.rs

@@ -89,6 +89,8 @@ pub mod landlock;
 pub mod memory_manager;
 pub mod migration;
 pub mod migration_transport;
+#[expect(unused)]
+mod migration_worker;
 mod pci_segment;
 pub mod seccomp_filters;
 mod serial_manager;