Updates

• Updated installation instructions for Debian Trixie.
• Fixed artist.nfo support to work with the musicbrainzartistid tag (case-insensitive). #750
• Added support for matching fanart image files located next to artist.nfo files. #750
• Introduced a new setting, artist-info-image-file-names, to specify which artist image files to look up alongside artist.nfo files. #750
• Restored parsing support for .dsf and .dsffile formats. #748
• Improved XML output performance in the Subsonic API.