settings_ui: Add ability to copy a link for a given setting (#41172)

Release Notes:

- settings_ui: Added the ability to copy a link to a given setting,
allowing users to quickly open the settings window at the correct
location in a faster way.

---------

Co-authored-by: cameron <cameron.studdstreet@gmail.com>
Co-authored-by: Ben Kunkle <ben@zed.dev>

crates/zed/src/main.rs

@@ -853,10 +853,13 @@ fn handle_open_request(request: OpenRequest, app_state: Arc<AppState>, cx: &mut
                 // languages.$(language).tab_size
                 // [ languages $(language) tab_size]
                 workspace::with_active_or_new_workspace(cx, |_workspace, window, cx| {
-                    window.dispatch_action(
-                        Box::new(zed_actions::OpenSettingsAt { path: setting_path }),
-                        cx,
-                    );
+                    match setting_path {
+                        None => window.dispatch_action(Box::new(zed_actions::OpenSettings), cx),
+                        Some(setting_path) => window.dispatch_action(
+                            Box::new(zed_actions::OpenSettingsAt { path: setting_path }),
+                            cx,
+                        ),
+                    }
                 });
             }
         }

crates/zed/src/zed/open_listener.rs

@@ -43,11 +43,20 @@ pub struct OpenRequest {
 #[derive(Debug)]
 pub enum OpenRequestKind {
     CliConnection((mpsc::Receiver<CliRequest>, IpcSender<CliResponse>)),
-    Extension { extension_id: String },
+    Extension {
+        extension_id: String,
+    },
     AgentPanel,
-    DockMenuAction { index: usize },
-    BuiltinJsonSchema { schema_path: String },
-    Setting { setting_path: String },
+    DockMenuAction {
+        index: usize,
+    },
+    BuiltinJsonSchema {
+        schema_path: String,
+    },
+    Setting {
+        // None just opens settings without navigating to a specific path
+        setting_path: Option<String>,
+    },
 }
 
 impl OpenRequest {
@@ -94,9 +103,11 @@ impl OpenRequest {
                 this.kind = Some(OpenRequestKind::BuiltinJsonSchema {
                     schema_path: schema_path.to_string(),
                 });
+            } else if url == "zed://settings" || url == "zed://settings/" {
+                this.kind = Some(OpenRequestKind::Setting { setting_path: None });
             } else if let Some(setting_path) = url.strip_prefix("zed://settings/") {
                 this.kind = Some(OpenRequestKind::Setting {
-                    setting_path: setting_path.to_string(),
+                    setting_path: Some(setting_path.to_string()),
                 });
             } else if url.starts_with("ssh://") {
                 this.parse_ssh_file_path(&url, cx)?