tape/drive: add 'move_to_file' to TapeDriver trait

so that we can directly move to a specified file on the tape

Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>

src/tape/drive/lto/mod.rs

@@ -309,6 +309,10 @@ impl TapeDriver for LtoTapeHandle {
         Ok(())
     }
 
+    fn move_to_file(&mut self, file: u64) -> Result<(), Error> {
+        self.locate_file(file)
+    }
+
     fn rewind(&mut self) -> Result<(), Error> {
         self.sg_tape.rewind()
     }