[tests] Mock saving/restoring vm state functions

Author: sharder996

tests/apple/mock_apple_vz_wrapper.h

@@ -47,7 +47,15 @@ class MockAppleVZ : public multipass::apple::AppleVZ
                 (const, override));
     MOCK_METHOD(apple::CFError,
                 resume_vm,
-                (multipass::apple::VMHandle & vm_handle),
+                (const multipass::apple::VMHandle& vm_handle),
+                (const, override));
+    MOCK_METHOD(apple::CFError,
+                save_machine_state_to_url,
+                (const multipass::apple::VMHandle& vm_handle, const std::filesystem::path& path),
+                (const, override));
+    MOCK_METHOD(apple::CFError,
+                restore_machine_state_from_url,
+                (const multipass::apple::VMHandle& vm_handle, const std::filesystem::path& path),
                 (const, override));
     MOCK_METHOD(apple::AppleVMState,
                 get_state,