add dropdown to album view

src/ui/window.blp

@@ -47,6 +47,22 @@ template $UiWindow: Adw.ApplicationWindow {
               CenterBox {
                 styles [ "toolbar" ]
 
+                [start]
+                DropDown {
+                  selected: 0;
+                  model: StringList {
+                    strings [
+                      _("Random"),
+                      _("Recently added"),
+                      _("Most played"),
+                      _("Recently played"),
+                      _("Starred"),
+                      _("Name"),
+                      _("Artist"),
+                    ]
+                  };
+                }
+
                 [center]
                 SearchEntry {
                   placeholder-text: _("Search...");