Added support for flac tags via metaflac (#823)

.local/bin/tag

@@ -55,5 +55,13 @@ Date=$date
 Genre=$genre
 Comment=$comment" | opustags -i -S "$file" ;;
 	*.mp3) eyeD3 -Q --remove-all -a "$artist" -A "$album" -t "$title" -n "$track" -N "$total" -Y "$date" "$file" ;;
+	*.flac) echo "TITLE=$title
+ARTIST=$artist
+ALBUM=$album
+TRACKNUMBER=$track
+TOTALTRACKS=$total
+DATE=$date
+GENRE=$genre
+DESCRIPTION=$comment" | metaflac --remove-all-tags --import-tags-from=- "$file" ;;
 	*) echo "File type not implemented yet." ;;
 esac