src/backup/backup_info.rs: new helper to list files

src/backup/datastore.rs

@@ -168,6 +168,11 @@ impl DataStore {
         BackupInfo::list_backups(&path)
     }
 
+    pub fn list_files(&self, backup_dir: &BackupDir) -> Result<Vec<String>, Error> {
+        let path = self.base_path();
+        BackupInfo::list_files(&path, backup_dir)
+    }
+
     pub fn list_images(&self) -> Result<Vec<PathBuf>, Error> {
         let base = self.base_path();