Add volume saving/reuse to video player (#27488)

app/javascript/mastodon/settings.js

@@ -46,4 +46,5 @@ export default class Settings {
 export const pushNotificationsSetting = new Settings('mastodon_push_notification_data');
 export const tagHistory = new Settings('mastodon_tag_history');
 export const bannerSettings = new Settings('mastodon_banner_settings');
-export const searchHistory = new Settings('mastodon_search_history');
+export const searchHistory = new Settings('mastodon_search_history');
+export const playerSettings = new Settings('mastodon_player');