MassStorage: Limit to .img and .iso files

mass_storage/scenes/mass_storage_scene_file_select.c

@@ -5,7 +5,7 @@ static bool mass_storage_file_select(MassStorageApp* mass_storage) {
     furi_assert(mass_storage);
 
     DialogsFileBrowserOptions browser_options;
-    dialog_file_browser_set_basic_options(&browser_options, "*", &I_mass_storage_10px);
+    dialog_file_browser_set_basic_options(&browser_options, ".img|.iso", &I_mass_storage_10px);
     browser_options.base_path = MASS_STORAGE_APP_PATH_FOLDER;
     browser_options.hide_ext = false;