feat(metadata): ✨ add customizable metadata delimiters for artists

* Introduced `metadata_delimiter_artist` and `metadata_delimiter_album_artist` settings.
* Updated `name_builder_artist` and `name_builder_album_artist` functions to utilize the new delimiters.
* This allows users to specify their preferred delimiter for artist names in metadata.

tidal_dl_ng/download.py

@@ -1208,12 +1208,12 @@ class Download:
             lyrics=lyrics,
             copy_right=copy_right,
             title=name_builder_title(track),
-            artists=name_builder_artist(track),
+            artists=name_builder_artist(track, delimiter=self.settings.data.metadata_delimiter_artist),
             album=track.album.name if track.album else "",
             tracknumber=track.track_num,
             date=release_date,
             isrc=isrc,
-            albumartist=name_builder_album_artist(track),
+            albumartist=name_builder_album_artist(track, delimiter=self.settings.data.metadata_delimiter_album_artist),
             totaltrack=track.album.num_tracks if track.album and track.album.num_tracks else 1,
             totaldisc=track.album.num_volumes if track.album and track.album.num_volumes else 1,
             discnumber=track.volume_num if track.volume_num else 1,