pets get their action bar, macros arrive, and hunters draw the bow

- a hunter's or warlock's pet has its action bar now: attack, follow, stay, the pet's own spells with cooldowns and autocast sparkles
- the macro system lands: the macro window, the icon chooser, /cast and /macro, and macros dragged onto the action bar
- hunter shots look right at last: the bow draws and releases on the shot, and the arrow lays a spark trail its whole flight
- the options window re-dresses in 1.12's own art with the classic dialog look, and gets a working search box and clickable steppers

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

crates/benilla-ui/src/script/container.rs

@@ -289,7 +289,9 @@ fn pickup_container_item(model: &mut super::Model, bag: i64, slot: u32) -> bool
                 }
             }
         }
-        Some(other @ (CursorPayload::Spell(_) | CursorPayload::Action(_))) => {
+        Some(
+            other @ (CursorPayload::Spell(_) | CursorPayload::Action(_) | CursorPayload::Macro(_)),
+        ) => {
             model.cursor = Some(other);
             false
         }