Add select_first and select_last bindings to outline view

Co-Authored-By: Antonio Scandurra <me@as-cii.com>
Co-Authored-By: Nathan Sobo <nathan@zed.dev>

crates/workspace/src/menu.rs

@@ -0,0 +1,19 @@
+use gpui::{action, keymap::Binding, MutableAppContext};
+
+action!(Confirm);
+action!(SelectPrev);
+action!(SelectNext);
+action!(SelectFirst);
+action!(SelectLast);
+
+pub fn init(cx: &mut MutableAppContext) {
+    cx.add_bindings([
+        Binding::new("up", SelectPrev, Some("menu")),
+        Binding::new("ctrl-p", SelectPrev, Some("menu")),
+        Binding::new("down", SelectNext, Some("menu")),
+        Binding::new("ctrl-n", SelectNext, Some("menu")),
+        Binding::new("cmd-up", SelectFirst, Some("menu")),
+        Binding::new("cmd-down", SelectLast, Some("menu")),
+        Binding::new("enter", Confirm, Some("menu")),
+    ]);
+}