Make ratings/favourites a bit more customizable (#2262)

* Replace show ratings toggle with favorite/rating controls setting

Swap `genera.showRatings` (previously a simple bool) for a
`favoriteRatingControls` enum, exposed via derived `useShowRatings` /
`useShowFavorites` hooks. Settings switch becomes a select, with a
migration to a new v32 schema mapping the old boolean forward with no
user change.

* Gate favorite controls on `favoriteRatingControls` setting

Hide the playerbar and mobile fullscreen favorite buttons and the
context-menu favorite action when the setting excludes favorites,
mirroring how ratings are already gated.

* Gate favorite controls on item cards and detail list

Drill a `showFavorite` flag through the item-card tree (mirroring
`showRating`), and gate the card/detail-list favorite badges and hover
buttons on the `favoriteRatingControls` setting.

* Gate favorite controls in detail headers and album group controls

* Keep the original `showRatings` switch and add a `showFavorites`

* Gate album header favorite hander at definition

src/renderer/store/env-settings-overrides.ts

@@ -247,6 +247,7 @@ const ENV_SETTING_SPECS: EnvSettingSpec[] = [
         path: ['general', 'showLyricsInSidebar'],
         type: 'bool',
     },
+    { key: 'FS_GENERAL_SHOW_FAVORITES', path: ['general', 'showFavorites'], type: 'bool' },
     {
         key: 'FS_GENERAL_SHOW_QUEUE_IN_SIDEBAR',
         path: ['general', 'showQueueInSidebar'],