Switch over to a reverse connection scheme (bridge to a guest bus)

sidebus-broker/src/portal/file_chooser.rs

@@ -8,6 +8,7 @@ use zbus::{Connection, ObjectServer, fdo::Result, zvariant};
 use super::documents::DocumentsProxy;
 use super::request::{RESPONSE_SUCCESS, ReqHandler, ResultTransformer};
 
+#[derive(Clone)]
 pub struct FileChooser {
     host: FileChooserProxy<'static>,
     docs: DocumentsProxy<'static>,