authfs: Support write config/operation in fuse

Bug: 171279640
Test: atest
Test: tools/device-test.sh

Change-Id: Ic611f72d51a5522d9ec6e6fdc82c115b5782c4ac
diff --git a/authfs/src/file.rs b/authfs/src/file.rs
index 1d52631..89fbd9d 100644
--- a/authfs/src/file.rs
+++ b/authfs/src/file.rs
@@ -2,7 +2,7 @@
 mod remote_file;
 
 pub use local_file::LocalFileReader;
-pub use remote_file::{RemoteFileReader, RemoteMerkleTreeReader};
+pub use remote_file::{RemoteFileEditor, RemoteFileReader, RemoteMerkleTreeReader};
 
 use std::io;