incusd/storage/nfs: Add trivial volume migration

Signed-off-by: Benjamin Somers <benjamin.somers@imt-atlantique.fr>

Author: bensmrs

internal/server/storage/drivers/driver_nfs_volumes.go

@@ -0,0 +1,13 @@
+package drivers
+
+import (
+	"io"
+
+	"github.com/lxc/incus/v6/internal/server/migration"
+	"github.com/lxc/incus/v6/internal/server/operations"
+)
+
+// MigrateVolume sends a volume for migration.
+func (n *nfs) MigrateVolume(vol Volume, conn io.ReadWriteCloser, volSrcArgs *migration.VolumeSourceArgs, op *operations.Operation) error {
+	return nil
+}