Add a album auto-create command

src/args.rs

@@ -78,6 +78,13 @@ pub(crate) enum Commands {
 
 #[derive(Serialize, Subcommand)]
 pub(crate) enum AlbumsCommands {
+    /// Create albums automatically from external libaries folder structure
+    #[serde(rename = "auto-create")]
+    AutoCreate {
+        /// String to use when composing album names from nested folder structures
+        #[arg(long, default_value = " / ")]
+        album_name_separator: String,
+    },
     /// Delete all albums
     #[serde(rename = "delete")]
     Delete {},