agent: Add websearch tool (#28621)

Staff only for now. We'll work on making this usable for non zed.dev
users later

Release Notes:

- N/A

---------

Co-authored-by: Antonio Scandurra <me@as-cii.com>
Co-authored-by: Danilo Leal <daniloleal09@gmail.com>
Co-authored-by: Marshall Bowers <git@maxdeviant.com>

crates/ui/src/components/tooltip.rs

@@ -160,7 +160,11 @@ impl Render for Tooltip {
                     }),
             )
             .when_some(self.meta.clone(), |this, meta| {
-                this.child(Label::new(meta).size(LabelSize::Small).color(Color::Muted))
+                this.child(
+                    div()
+                        .max_w_72()
+                        .child(Label::new(meta).size(LabelSize::Small).color(Color::Muted)),
+                )
             })
         })
     }