Expose the metadata format option in the UI

ui/media/js/auto-save.js

@@ -38,6 +38,7 @@ const SETTINGS_IDS_LIST = [
     "sound_toggle",
     "turbo",
     "confirm_dangerous_actions",
+    "metadata_output_format",
     "auto_save_settings",
     "apply_color_correction"
 ]

ui/media/js/parameters.js

@@ -53,6 +53,19 @@ var PARAMETERS = [
             return `<input id="${parameter.id}" name="${parameter.id}" size="30" disabled>`
         }
     },
+    {
+        id: "metadata_output_format",
+        type: ParameterType.select,
+        label: "Metadata format",
+        note: "the metadata will be saved to disk in this format",
+        default: "txt",
+        options: [
+            {
+                value: "txt",
+                label: "json"
+            }
+        ],
+    },
     {
         id: "sound_toggle",
         type: ParameterType.checkbox,