New Podcasts and Music lists + many iOS 15 fixes

iOS

• New: Podcasts list, save your favourite podcasts.
• New: Music Artists list, add your favourite singers and music bands.
• New: Music Albums list, add your favourite music albums.
• New: Songs list, add your favourite songs.
• Fix: Allow to edit any attribute of your items.
• Fix: iOS 15 support.
• Fix: Sorting by release date in Movies.