feat(push): add object when pushing directory

tests/push.rs

@@ -128,6 +128,9 @@ mod push_tests {
         // tests
         assert!(server.has_file("file1", "foo"));
         assert!(server.has_file("dir/file2", "bar"));
+        let (staged, not_staged) = client.get_status();
+        assert!(staged.len() == 0);
+        assert!(not_staged.len() == 0);
 
         client.clean();
         server.clean();