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/gpui/src/keymap.rs

@@ -23,6 +23,7 @@ struct Pending {
     context: Option<Context>,
 }
 
+#[derive(Default)]
 pub struct Keymap(Vec<Binding>);
 
 pub struct Binding {
@@ -153,24 +154,6 @@ impl Keymap {
     }
 }
 
-pub mod menu {
-    use crate::action;
-
-    action!(SelectPrev);
-    action!(SelectNext);
-}
-
-impl Default for Keymap {
-    fn default() -> Self {
-        Self(vec![
-            Binding::new("up", menu::SelectPrev, Some("menu")),
-            Binding::new("ctrl-p", menu::SelectPrev, Some("menu")),
-            Binding::new("down", menu::SelectNext, Some("menu")),
-            Binding::new("ctrl-n", menu::SelectNext, Some("menu")),
-        ])
-    }
-}
-
 impl Binding {
     pub fn new<A: Action>(keystrokes: &str, action: A, context: Option<&str>) -> Self {
         let context = if let Some(context) = context {